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[PATCH] macsonic/jazzsonic network drivers update

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The purpose of this patch:

- Adopt the DMA API (jazzsonic, macsonic & core driver).

- Adopt the driver model (macsonic).

This part was cribbed from jazzsonic. As a consequence, macsonic once
again works as a module. Driver model is also used by the DMA calls.

- Support 16 bit cards (macsonic & core driver, also affects jazzsonic)

This code was adapted from the mac68k linux 2.2 kernel, where it has
languished for a long time.

- Support more 32-bit mac cards (macsonic)

Also from mac68k repo.

- Zero-copy buffer handling (core driver)

Provides a nice performance improvement. The new algorithm incidentally
helped to replace the old Jazz DMA code.

The patch was tested on a variety of macs (several 32-bit quadra built-in
NICs, a 16-bit LC PDS NIC and a 16-bit comm-slot NIC), and also on MIPS
Jazz.

Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Acked-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
This commit is contained in:
Finn Thain 2005-08-20 15:53:22 +10:00 committed by Jeff Garzik
parent 2600636065
commit efcce83936
5 changed files with 970 additions and 890 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

4
drivers/net/Space.c
View file

@ -87,7 +87,6 @@ extern struct net_device *mvme147lance_probe(int unit);
extern struct net_device *tc515_probe(int unit);
extern struct net_device *lance_probe(int unit);
extern struct net_device *mace_probe(int unit);
extern struct net_device *macsonic_probe(int unit);
extern struct net_device *mac8390_probe(int unit);
extern struct net_device *mac89x0_probe(int unit);
extern struct net_device *mc32_probe(int unit);
@ -284,9 +283,6 @@ static struct devprobe2 m68k_probes[] __initdata = {
#ifdef CONFIG_MACMACE /* Mac 68k Quadra AV builtin Ethernet */
{mace_probe, 0},
#endif
#ifdef CONFIG_MACSONIC /* Mac SONIC-based Ethernet of all sorts */
{macsonic_probe, 0},
#endif
#ifdef CONFIG_MAC8390 /* NuBus NS8390-based cards */
{mac8390_probe, 0},
#endif

188
drivers/net/jazzsonic.c
View file

@ -1,5 +1,10 @@
/*
* sonic.c
* 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)
*
@ -28,8 +33,8 @@
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/skbuff.h>
#include <linux/bitops.h>
#include <linux/device.h>
#include <linux/dma-mapping.h>
#include <asm/bootinfo.h>
#include <asm/system.h>
@ -44,22 +49,20 @@ static struct platform_device *jazz_sonic_device;
#define SONIC_MEM_SIZE 0x100
#define SREGS_PAD(n) u16 n;
#include "sonic.h"
/*
* Macros to access SONIC registers
*/
#define SONIC_READ(reg) (*((volatile unsigned int *)base_addr+reg))
#define SONIC_READ(reg) (*((volatile unsigned int *)dev->base_addr+reg))
#define SONIC_WRITE(reg,val) \
do { \
*((volatile unsigned int *)base_addr+(reg)) = (val); \
*((volatile unsigned int *)dev->base_addr+(reg)) = (val); \
} while (0)
/* use 0 for production, 1 for verification, >2 for debug */
/* use 0 for production, 1 for verification, >1 for debug */
#ifdef SONIC_DEBUG
static unsigned int sonic_debug = SONIC_DEBUG;
#else
@ -85,18 +88,18 @@ static unsigned short known_revisions[] =
0xffff /* end of list */
};
static int __init sonic_probe1(struct net_device *dev, unsigned long base_addr,
unsigned int irq)
static int __init sonic_probe1(struct net_device *dev)
{
static unsigned version_printed;
unsigned int silicon_revision;
unsigned int val;
struct sonic_local *lp;
struct sonic_local *lp = netdev_priv(dev);
int err = -ENODEV;
int i;
if (!request_mem_region(base_addr, SONIC_MEM_SIZE, jazz_sonic_string))
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
@ -120,11 +123,7 @@ static int __init sonic_probe1(struct net_device *dev, unsigned long base_addr,
if (sonic_debug && version_printed++ == 0)
printk(version);
printk("%s: Sonic ethernet found at 0x%08lx, ", dev->name, base_addr);
/* Fill in the 'dev' fields. */
dev->base_addr = base_addr;
dev->irq = irq;
printk(KERN_INFO "%s: Sonic ethernet found at 0x%08lx, ", lp->device->bus_id, dev->base_addr);
/*
* Put the sonic into software reset, then
@ -138,84 +137,44 @@ static int __init sonic_probe1(struct net_device *dev, unsigned long base_addr,
dev->dev_addr[i*2+1] = val >> 8;
}
printk("HW Address ");
for (i = 0; i < 6; i++) {
printk("%2.2x", dev->dev_addr[i]);
if (i<5)
printk(":");
}
printk(" IRQ %d\n", irq);
err = -ENOMEM;
/* Initialize the device structure. */
if (dev->priv == NULL) {
/*
* the memory be located in the same 64kb segment
*/
lp = NULL;
i = 0;
do {
lp = kmalloc(sizeof(*lp), GFP_KERNEL);
if ((unsigned long) lp >> 16
!= ((unsigned long)lp + sizeof(*lp) ) >> 16) {
/* FIXME, free the memory later */
kfree(lp);
lp = NULL;
}
} while (lp == NULL && i++ < 20);
if (lp == NULL) {
printk("%s: couldn't allocate memory for descriptors\n",
dev->name);
goto out;
}
lp->dma_bitmode = SONIC_BITMODE32;
memset(lp, 0, sizeof(struct sonic_local));
/* get the virtual dma address */
lp->cda_laddr = vdma_alloc(CPHYSADDR(lp),sizeof(*lp));
if (lp->cda_laddr == ~0UL) {
printk("%s: couldn't get DMA page entry for "
"descriptors\n", dev->name);
goto out1;
}
lp->tda_laddr = lp->cda_laddr + sizeof (lp->cda);
lp->rra_laddr = lp->tda_laddr + sizeof (lp->tda);
lp->rda_laddr = lp->rra_laddr + sizeof (lp->rra);
/* allocate receive buffer area */
/* FIXME, maybe we should use skbs */
lp->rba = kmalloc(SONIC_NUM_RRS * SONIC_RBSIZE, GFP_KERNEL);
if (!lp->rba) {
printk("%s: couldn't allocate receive buffers\n",
dev->name);
goto out2;
}
/* get virtual dma address */
lp->rba_laddr = vdma_alloc(CPHYSADDR(lp->rba),
SONIC_NUM_RRS * SONIC_RBSIZE);
if (lp->rba_laddr == ~0UL) {
printk("%s: couldn't get DMA page entry for receive "
"buffers\n",dev->name);
goto out3;
}
/* now convert pointer to KSEG1 pointer */
lp->rba = (char *)KSEG1ADDR(lp->rba);
flush_cache_all();
dev->priv = (struct sonic_local *)KSEG1ADDR(lp);
/* Allocate the entire chunk of memory for the descriptors.
Note that this cannot cross a 64K boundary. */
if ((lp->descriptors = dma_alloc_coherent(lp->device,
SIZEOF_SONIC_DESC * SONIC_BUS_SCALE(lp->dma_bitmode),
&lp->descriptors_laddr, GFP_KERNEL)) == NULL) {
printk(KERN_ERR "%s: couldn't alloc DMA memory for descriptors.\n", lp->device->bus_id);
goto out;
}
lp = (struct sonic_local *)dev->priv;
/* 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->open = sonic_open;
dev->stop = sonic_close;
dev->hard_start_xmit = sonic_send_packet;
dev->get_stats = sonic_get_stats;
dev->get_stats = sonic_get_stats;
dev->set_multicast_list = &sonic_multicast_list;
dev->tx_timeout = sonic_tx_timeout;
dev->watchdog_timeo = TX_TIMEOUT;
/*
@ -226,14 +185,8 @@ static int __init sonic_probe1(struct net_device *dev, unsigned long base_addr,
SONIC_WRITE(SONIC_MPT,0xffff);
return 0;
out3:
kfree(lp->rba);
out2:
vdma_free(lp->cda_laddr);
out1:
kfree(lp);
out:
release_region(base_addr, SONIC_MEM_SIZE);
release_region(dev->base_addr, SONIC_MEM_SIZE);
return err;
}
@ -245,7 +198,6 @@ static int __init jazz_sonic_probe(struct device *device)
{
struct net_device *dev;
struct sonic_local *lp;
unsigned long base_addr;
int err = 0;
int i;
@ -255,21 +207,26 @@ static int __init jazz_sonic_probe(struct device *device)
if (mips_machgroup != MACH_GROUP_JAZZ)
return -ENODEV;
dev = alloc_etherdev(0);
dev = alloc_etherdev(sizeof(struct sonic_local));
if (!dev)
return -ENOMEM;
netdev_boot_setup_check(dev);
base_addr = dev->base_addr;
lp = netdev_priv(dev);
lp->device = device;
SET_NETDEV_DEV(dev, device);
SET_MODULE_OWNER(dev);
if (base_addr >= KSEG0) { /* Check a single specified location. */
err = sonic_probe1(dev, base_addr, dev->irq);
} else if (base_addr != 0) { /* Don't probe at all. */
netdev_boot_setup_check(dev);
if (dev->base_addr >= KSEG0) { /* Check a single specified location. */
err = sonic_probe1(dev);
} else if (dev->base_addr != 0) { /* Don't probe at all. */
err = -ENXIO;
} else {
for (i = 0; sonic_portlist[i].port; i++) {
int io = sonic_portlist[i].port;
if (sonic_probe1(dev, io, sonic_portlist[i].irq) == 0)
dev->base_addr = sonic_portlist[i].port;
dev->irq = sonic_portlist[i].irq;
if (sonic_probe1(dev) == 0)
break;
}
if (!sonic_portlist[i].port)
@ -281,14 +238,17 @@ static int __init jazz_sonic_probe(struct device *device)
if (err)
goto out1;
printk("%s: MAC ", dev->name);
for (i = 0; i < 6; i++) {
printk("%2.2x", dev->dev_addr[i]);
if (i < 5)
printk(":");
}
printk(" IRQ %d\n", dev->irq);
return 0;
out1:
lp = dev->priv;
vdma_free(lp->rba_laddr);
kfree(lp->rba);
vdma_free(lp->cda_laddr);
kfree(lp);
release_region(dev->base_addr, SONIC_MEM_SIZE);
out:
free_netdev(dev);
@ -296,21 +256,22 @@ static int __init jazz_sonic_probe(struct device *device)
return err;
}
/*
* SONIC uses a normal IRQ
*/
#define sonic_request_irq request_irq
#define sonic_free_irq free_irq
MODULE_DESCRIPTION("Jazz SONIC ethernet driver");
module_param(sonic_debug, int, 0);
MODULE_PARM_DESC(sonic_debug, "jazzsonic debug level (1-4)");
#define sonic_chiptomem(x) KSEG1ADDR(vdma_log2phys(x))
#define SONIC_IRQ_FLAG SA_INTERRUPT
#include "sonic.c"
static int __devexit jazz_sonic_device_remove (struct device *device)
{
struct net_device *dev = device->driver_data;
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);
@ -323,7 +284,7 @@ static struct device_driver jazz_sonic_driver = {
.probe = jazz_sonic_probe,
.remove = __devexit_p(jazz_sonic_device_remove),
};
static void jazz_sonic_platform_release (struct device *device)
{
struct platform_device *pldev;
@ -336,10 +297,11 @@ static void jazz_sonic_platform_release (struct device *device)
static int __init jazz_sonic_init_module(void)
{
struct platform_device *pldev;
int err;
if (driver_register(&jazz_sonic_driver)) {
if ((err = driver_register(&jazz_sonic_driver))) {
printk(KERN_ERR "Driver registration failed\n");
return -ENOMEM;
return err;
}
jazz_sonic_device = NULL;

550
drivers/net/macsonic.c
View file

@ -1,6 +1,12 @@
/*
* macsonic.c
*
* (C) 2005 Finn Thain
*
* Converted to DMA API, converted to unified driver model, made it work as
* a module again, and from the mac68k project, introduced more 32-bit cards
* and dhd's support for 16-bit cards.
*
* (C) 1998 Alan Cox
*
* Debugging Andreas Ehliar, Michael Schmitz
@ -26,8 +32,8 @@
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/types.h>
#include <linux/ctype.h>
#include <linux/fcntl.h>
#include <linux/interrupt.h>
#include <linux/init.h>
@ -41,8 +47,8 @@
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/skbuff.h>
#include <linux/module.h>
#include <linux/bitops.h>
#include <linux/device.h>
#include <linux/dma-mapping.h>
#include <asm/bootinfo.h>
#include <asm/system.h>
@ -54,25 +60,28 @@
#include <asm/macints.h>
#include <asm/mac_via.h>
#define SREGS_PAD(n) u16 n;
static char mac_sonic_string[] = "macsonic";
static struct platform_device *mac_sonic_device;
#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))
/* These should basically be bus-size and endian independent (since
the SONIC is at least smart enough that it uses the same endianness
as the host, unlike certain less enlightened Macintosh NICs) */
#define SONIC_READ(reg) (nubus_readw(dev->base_addr + (reg * 4) \
+ lp->reg_offset))
#define SONIC_WRITE(reg,val) (nubus_writew(val, dev->base_addr + (reg * 4) \
+ lp->reg_offset))
/* 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
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);
@ -108,40 +117,6 @@ enum macsonic_type {
#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
*/
@ -160,103 +135,55 @@ static inline void bit_reverse_addr(unsigned char addr[6])
int __init macsonic_init(struct net_device* dev)
{
struct sonic_local* lp = NULL;
int i;
struct sonic_local* lp = netdev_priv(dev);
/* 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);
if ((lp->descriptors = dma_alloc_coherent(lp->device,
SIZEOF_SONIC_DESC * SONIC_BUS_SCALE(lp->dma_bitmode),
&lp->descriptors_laddr, GFP_KERNEL)) == NULL) {
printk(KERN_ERR "%s: couldn't alloc DMA memory for descriptors.\n", lp->device->bus_id);
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->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));
* SONIC_BUS_SCALE(lp->dma_bitmode));
lp->rra = lp->rda + (SIZEOF_SONIC_RD * SONIC_NUM_RDS
* SONIC_BUS_SCALE(lp->dma_bitmode));
* 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
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->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;
dev->tx_timeout = sonic_tx_timeout;
dev->watchdog_timeo = TX_TIMEOUT;
/*
* clear tally counter
*/
sonic_write(dev, SONIC_CRCT, 0xffff);
sonic_write(dev, SONIC_FAET, 0xffff);
sonic_write(dev, SONIC_MPT, 0xffff);
SONIC_WRITE(SONIC_CRCT, 0xffff);
SONIC_WRITE(SONIC_FAET, 0xffff);
SONIC_WRITE(SONIC_MPT, 0xffff);
return 0;
}
int __init mac_onboard_sonic_ethernet_addr(struct net_device* dev)
{
struct sonic_local *lp = netdev_priv(dev);
const int prom_addr = ONBOARD_SONIC_PROM_BASE;
int i;
@ -270,6 +197,7 @@ int __init mac_onboard_sonic_ethernet_addr(struct net_device* dev)
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\x80\x19", 3) &&
memcmp(dev->dev_addr, "\x00\x05\x02", 3))
bit_reverse_addr(dev->dev_addr);
else
@ -281,22 +209,23 @@ int __init mac_onboard_sonic_ethernet_addr(struct net_device* dev)
the card... */
if (memcmp(dev->dev_addr, "\x08\x00\x07", 3) &&
memcmp(dev->dev_addr, "\x00\xA0\x40", 3) &&
memcmp(dev->dev_addr, "\x00\x80\x19", 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);
SONIC_WRITE(SONIC_CMD, SONIC_CR_RST);
SONIC_WRITE(SONIC_CEP, 15);
val = sonic_read(dev, SONIC_CAP2);
val = SONIC_READ(SONIC_CAP2);
dev->dev_addr[5] = val >> 8;
dev->dev_addr[4] = val & 0xff;
val = sonic_read(dev, SONIC_CAP1);
val = SONIC_READ(SONIC_CAP1);
dev->dev_addr[3] = val >> 8;
dev->dev_addr[2] = val & 0xff;
val = sonic_read(dev, SONIC_CAP0);
val = SONIC_READ(SONIC_CAP0);
dev->dev_addr[1] = val >> 8;
dev->dev_addr[0] = val & 0xff;
@ -311,6 +240,7 @@ int __init mac_onboard_sonic_ethernet_addr(struct net_device* dev)
if (memcmp(dev->dev_addr, "\x08\x00\x07", 3) &&
memcmp(dev->dev_addr, "\x00\xA0\x40", 3) &&
memcmp(dev->dev_addr, "\x00\x80\x19", 3) &&
memcmp(dev->dev_addr, "\x00\x05\x02", 3))
{
/*
@ -325,8 +255,9 @@ int __init mac_onboard_sonic_probe(struct net_device* dev)
{
/* Bwahahaha */
static int once_is_more_than_enough;
int i;
int dma_bitmode;
struct sonic_local* lp = netdev_priv(dev);
int sr;
int commslot = 0;
if (once_is_more_than_enough)
return -ENODEV;
@ -335,20 +266,18 @@ int __init mac_onboard_sonic_probe(struct net_device* dev)
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;
}
printk(KERN_INFO "Checking for internal Macintosh ethernet (SONIC).. ");
/* 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_P575 ||
macintosh_config->ident == MAC_MODEL_C610) {
unsigned long flags;
int card_present;
@ -361,13 +290,13 @@ int __init mac_onboard_sonic_probe(struct net_device* dev)
printk("none.\n");
return -ENODEV;
}
commslot = 1;
}
printk("yes\n");
/* Danger! My arms are flailing wildly! You *must* set this
before using sonic_read() */
/* Danger! My arms are flailing wildly! You *must* set lp->reg_offset
* and dev->base_addr before using SONIC_READ() or SONIC_WRITE() */
dev->base_addr = ONBOARD_SONIC_REGISTERS;
if (via_alt_mapping)
dev->irq = IRQ_AUTO_3;
@ -379,84 +308,66 @@ int __init mac_onboard_sonic_probe(struct net_device* dev)
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 */
lp->device->bus_id, dev->base_addr);
/* 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 {
lp->reg_offset = 0;
lp->dma_bitmode = SONIC_BITMODE16;
sr = SONIC_READ(SONIC_SR);
} else if (commslot) {
/* 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;
of them are not. The 32-bit cards use offset 2 and
have known revisions, we try reading the revision
register at offset 2, if we don't get a known revision
we assume 16 bit at offset 0. */
lp->reg_offset = 2;
lp->dma_bitmode = SONIC_BITMODE16;
/* 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;
sr = SONIC_READ(SONIC_SR);
if (sr == 0x0004 || sr == 0x0006 || sr == 0x0100 || sr == 0x0101)
/* 83932 is 0x0004 or 0x0006, 83934 is 0x0100 or 0x0101 */
lp->dma_bitmode = SONIC_BITMODE32;
else {
lp->dma_bitmode = SONIC_BITMODE16;
lp->reg_offset = 0;
sr = SONIC_READ(SONIC_SR);
}
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);
} else {
/* All onboard cards are at offset 2 with 32 bit DMA. */
lp->reg_offset = 2;
lp->dma_bitmode = SONIC_BITMODE32;
sr = SONIC_READ(SONIC_SR);
}
printk(KERN_INFO
"%s: revision 0x%04x, using %d bit DMA and register offset %d\n",
lp->device->bus_id, sr, lp->dma_bitmode?32:16, lp->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 0 /* This is sometimes useful to find out how MacOS configured the card. */
printk(KERN_INFO "%s: DCR: 0x%04x, DCR2: 0x%04x\n", lp->device->bus_id,
SONIC_READ(SONIC_DCR) & 0xffff, SONIC_READ(SONIC_DCR2) & 0xffff);
#endif
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));
SONIC_WRITE(SONIC_CMD, SONIC_CR_RST);
SONIC_WRITE(SONIC_DCR, SONIC_DCR_EXBUS | SONIC_DCR_BMS |
SONIC_DCR_RFT1 | SONIC_DCR_TFT0 |
(lp->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);
* extended programmable output bits, as it may not have been
* initialised since the hardware reset. */
SONIC_WRITE(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);
SONIC_WRITE(SONIC_IMR, 0);
SONIC_WRITE(SONIC_ISR, 0x7fff);
/* 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);
}
@ -468,8 +379,10 @@ int __init mac_nubus_sonic_ethernet_addr(struct net_device* dev,
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);
/* Some of the addresses are bit-reversed */
if (id != MACSONIC_DAYNA)
bit_reverse_addr(dev->dev_addr);
return 0;
}
@ -487,6 +400,15 @@ int __init macsonic_ident(struct nubus_dev* ndev)
else
return MACSONIC_APPLE;
}
if (ndev->dr_hw == NUBUS_DRHW_SMC9194 &&
ndev->dr_sw == NUBUS_DRSW_DAYNA)
return MACSONIC_DAYNA;
if (ndev->dr_hw == NUBUS_DRHW_SONIC_LC &&
ndev->dr_sw == 0) { /* huh? */
return MACSONIC_APPLE16;
}
return -1;
}
@ -494,12 +416,12 @@ int __init mac_nubus_sonic_probe(struct net_device* dev)
{
static int slots;
struct nubus_dev* ndev = NULL;
struct sonic_local* lp = netdev_priv(dev);
unsigned long base_addr, prom_addr;
u16 sonic_dcr;
int id;
int i;
int dma_bitmode;
int id = -1;
int reg_offset, 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)
@ -521,51 +443,52 @@ int __init mac_nubus_sonic_probe(struct net_device* dev)
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;
sonic_dcr = SONIC_DCR_EXBUS | SONIC_DCR_RFT0 | SONIC_DCR_RFT1 |
SONIC_DCR_TFT0;
reg_offset = 2;
dma_bitmode = 1;
dma_bitmode = SONIC_BITMODE32;
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;
dma_bitmode = SONIC_BITMODE32;
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;
sonic_dcr = SONIC_DCR_EXBUS | SONIC_DCR_RFT1 | SONIC_DCR_TFT0 |
SONIC_DCR_PO1 | SONIC_DCR_BMS;
reg_offset = 0;
dma_bitmode = 0;
dma_bitmode = SONIC_BITMODE16;
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;
sonic_dcr = SONIC_DCR_RFT1 | SONIC_DCR_TFT0 |
SONIC_DCR_PO1 | SONIC_DCR_BMS;
reg_offset = 0;
dma_bitmode = 0;
dma_bitmode = SONIC_BITMODE16;
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;
sonic_dcr = SONIC_DCR_BMS |
SONIC_DCR_RFT1 | SONIC_DCR_TFT0 | SONIC_DCR_PO1;
reg_offset = 0;
dma_bitmode = 0;
dma_bitmode = SONIC_BITMODE16;
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() */
/* Danger! My arms are flailing wildly! You *must* set lp->reg_offset
* and dev->base_addr before using SONIC_READ() or SONIC_WRITE() */
dev->base_addr = base_addr;
lp->reg_offset = reg_offset;
lp->dma_bitmode = dma_bitmode;
dev->irq = SLOT2IRQ(ndev->board->slot);
if (!sonic_version_printed) {
@ -573,29 +496,66 @@ int __init mac_nubus_sonic_probe(struct net_device* dev)
sonic_version_printed = 1;
}
printk(KERN_INFO "%s: %s in slot %X\n",
dev->name, ndev->board->name, ndev->board->slot);
lp->device->bus_id, 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);
lp->device->bus_id, SONIC_READ(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;
}
#if 0 /* This is sometimes useful to find out how MacOS configured the card. */
printk(KERN_INFO "%s: DCR: 0x%04x, DCR2: 0x%04x\n", lp->device->bus_id,
SONIC_READ(SONIC_DCR) & 0xffff, SONIC_READ(SONIC_DCR2) & 0xffff);
#endif
/* 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));
SONIC_WRITE(SONIC_CMD, SONIC_CR_RST);
SONIC_WRITE(SONIC_DCR, sonic_dcr | (dma_bitmode ? SONIC_DCR_DW : 0));
/* This *must* be written back to in order to restore the
* extended programmable output bits, since it may not have been
* initialised since the hardware reset. */
SONIC_WRITE(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);
SONIC_WRITE(SONIC_IMR, 0);
SONIC_WRITE(SONIC_ISR, 0x7fff);
/* Now look for the MAC address. */
if (mac_nubus_sonic_ethernet_addr(dev, prom_addr, id) != 0)
return -ENODEV;
printk(KERN_INFO "MAC ");
/* Shared init code */
return macsonic_init(dev);
}
static int __init mac_sonic_probe(struct device *device)
{
struct net_device *dev;
struct sonic_local *lp;
int err;
int i;
dev = alloc_etherdev(sizeof(struct sonic_local));
if (!dev)
return -ENOMEM;
lp = netdev_priv(dev);
lp->device = device;
SET_NETDEV_DEV(dev, device);
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 out;
printk("%s: MAC ", dev->name);
for (i = 0; i < 6; i++) {
printk("%2.2x", dev->dev_addr[i]);
if (i < 5)
@ -603,55 +563,95 @@ int __init mac_nubus_sonic_probe(struct net_device* dev)
}
printk(" IRQ %d\n", dev->irq);
/* Shared init code */
return macsonic_init(dev);
return 0;
out:
free_netdev(dev);
return err;
}
#ifdef MODULE
static struct net_device *dev_macsonic;
MODULE_PARM(sonic_debug, "i");
MODULE_DESCRIPTION("Macintosh SONIC ethernet driver");
module_param(sonic_debug, int, 0);
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
#define SONIC_IRQ_FLAG IRQ_FLG_FAST
#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:
*
*/
static int __devexit mac_sonic_device_remove (struct device *device)
{
struct net_device *dev = device->driver_data;
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);
free_netdev (dev);
return 0;
}
static struct device_driver mac_sonic_driver = {
.name = mac_sonic_string,
.bus = &platform_bus_type,
.probe = mac_sonic_probe,
.remove = __devexit_p(mac_sonic_device_remove),
};
static void mac_sonic_platform_release(struct device *device)
{
struct platform_device *pldev;
/* free device */
pldev = to_platform_device (device);
kfree (pldev);
}
static int __init mac_sonic_init_module(void)
{
struct platform_device *pldev;
int err;
if ((err = driver_register(&mac_sonic_driver))) {
printk(KERN_ERR "Driver registration failed\n");
return err;
}
mac_sonic_device = NULL;
if (!(pldev = kmalloc (sizeof (*pldev), GFP_KERNEL))) {
goto out_unregister;
}
memset(pldev, 0, sizeof (*pldev));
pldev->name = mac_sonic_string;
pldev->id = 0;
pldev->dev.release = mac_sonic_platform_release;
mac_sonic_device = pldev;
if (platform_device_register (pldev)) {
kfree(pldev);
mac_sonic_device = NULL;
}
return 0;
out_unregister:
platform_device_unregister(pldev);
return -ENOMEM;
}
static void __exit mac_sonic_cleanup_module(void)
{
driver_unregister(&mac_sonic_driver);
if (mac_sonic_device) {
platform_device_unregister(mac_sonic_device);
mac_sonic_device = NULL;
}
}
module_init(mac_sonic_init_module);
module_exit(mac_sonic_cleanup_module);

668
drivers/net/sonic.c
View file

@ -1,6 +1,11 @@
/*
* sonic.c
*
* (C) 2005 Finn Thain
*
* Converted to DMA API, added zero-copy buffer handling, 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
@ -9,12 +14,23 @@
* (C) 1995 by Andreas Busse (andy@waldorf-gmbh.de)
*
* Core code included by system sonic drivers
*
* And... partially rewritten again by David Huggins-Daines in order
* to cope with screwed up Macintosh NICs that may or may not use
* 16-bit DMA.
*
* (C) 1999 David Huggins-Daines <dhd@debian.org>
*
*/
/*
* Sources: Olivetti M700-10 Risc Personal Computer hardware handbook,
* National Semiconductors data sheet for the DP83932B Sonic Ethernet
* controller, and the files "8390.c" and "skeleton.c" in this directory.
*
* Additional sources: Nat Semi data sheet for the DP83932C and Nat Semi
* Application Note AN-746, the files "lance.c" and "ibmlana.c". See also
* the NetBSD file "sys/arch/mac68k/dev/if_sn.c".
*/
@ -28,6 +44,9 @@
*/
static int sonic_open(struct net_device *dev)
{
struct sonic_local *lp = netdev_priv(dev);
int i;
if (sonic_debug > 2)
printk("sonic_open: initializing sonic driver.\n");
@ -40,14 +59,59 @@ static int sonic_open(struct net_device *dev)
* This means that during execution of the handler interrupt are disabled
* covering another bug otherwise corrupting data. This doesn't mean
* this glue works ok under all situations.
*
* Note (dhd): this also appears to prevent lockups on the Macintrash
* when more than one Ethernet card is installed (knock on wood)
*
* Note (fthain): whether the above is still true is anyones guess. Certainly
* the buffer handling algorithms will not tolerate re-entrance without some
* mutual exclusion added. Anyway, the memcpy has now been eliminated from the
* rx code to make this a faster "fast interrupt".
*/
// if (sonic_request_irq(dev->irq, &sonic_interrupt, 0, "sonic", dev)) {
if (sonic_request_irq(dev->irq, &sonic_interrupt, SA_INTERRUPT,
"sonic", dev)) {
printk("\n%s: unable to get IRQ %d .\n", dev->name, dev->irq);
if (request_irq(dev->irq, &sonic_interrupt, SONIC_IRQ_FLAG, "sonic", dev)) {
printk(KERN_ERR "\n%s: unable to get IRQ %d .\n", dev->name, dev->irq);
return -EAGAIN;
}
for (i = 0; i < SONIC_NUM_RRS; i++) {
struct sk_buff *skb = dev_alloc_skb(SONIC_RBSIZE + 2);
if (skb == NULL) {
while(i > 0) { /* free any that were allocated successfully */
i--;
dev_kfree_skb(lp->rx_skb[i]);
lp->rx_skb[i] = NULL;
}
printk(KERN_ERR "%s: couldn't allocate receive buffers\n",
dev->name);
return -ENOMEM;
}
skb->dev = dev;
/* align IP header unless DMA requires otherwise */
if (SONIC_BUS_SCALE(lp->dma_bitmode) == 2)
skb_reserve(skb, 2);
lp->rx_skb[i] = skb;
}
for (i = 0; i < SONIC_NUM_RRS; i++) {
dma_addr_t laddr = dma_map_single(lp->device, skb_put(lp->rx_skb[i], SONIC_RBSIZE),
SONIC_RBSIZE, DMA_FROM_DEVICE);
if (!laddr) {
while(i > 0) { /* free any that were mapped successfully */
i--;
dma_unmap_single(lp->device, lp->rx_laddr[i], SONIC_RBSIZE, DMA_FROM_DEVICE);
lp->rx_laddr[i] = (dma_addr_t)0;
}
for (i = 0; i < SONIC_NUM_RRS; i++) {
dev_kfree_skb(lp->rx_skb[i]);
lp->rx_skb[i] = NULL;
}
printk(KERN_ERR "%s: couldn't map rx DMA buffers\n",
dev->name);
return -ENOMEM;
}
lp->rx_laddr[i] = laddr;
}
/*
* Initialize the SONIC
*/
@ -67,7 +131,8 @@ static int sonic_open(struct net_device *dev)
*/
static int sonic_close(struct net_device *dev)
{
unsigned int base_addr = dev->base_addr;
struct sonic_local *lp = netdev_priv(dev);
int i;
if (sonic_debug > 2)
printk("sonic_close\n");
@ -77,20 +142,56 @@ static int sonic_close(struct net_device *dev)
/*
* stop the SONIC, disable interrupts
*/
SONIC_WRITE(SONIC_ISR, 0x7fff);
SONIC_WRITE(SONIC_IMR, 0);
SONIC_WRITE(SONIC_ISR, 0x7fff);
SONIC_WRITE(SONIC_CMD, SONIC_CR_RST);
sonic_free_irq(dev->irq, dev); /* release the IRQ */
/* unmap and free skbs that haven't been transmitted */
for (i = 0; i < SONIC_NUM_TDS; i++) {
if(lp->tx_laddr[i]) {
dma_unmap_single(lp->device, lp->tx_laddr[i], lp->tx_len[i], DMA_TO_DEVICE);
lp->tx_laddr[i] = (dma_addr_t)0;
}
if(lp->tx_skb[i]) {
dev_kfree_skb(lp->tx_skb[i]);
lp->tx_skb[i] = NULL;
}
}
/* unmap and free the receive buffers */
for (i = 0; i < SONIC_NUM_RRS; i++) {
if(lp->rx_laddr[i]) {
dma_unmap_single(lp->device, lp->rx_laddr[i], SONIC_RBSIZE, DMA_FROM_DEVICE);
lp->rx_laddr[i] = (dma_addr_t)0;
}
if(lp->rx_skb[i]) {
dev_kfree_skb(lp->rx_skb[i]);
lp->rx_skb[i] = NULL;
}
}
free_irq(dev->irq, dev); /* release the IRQ */
return 0;
}
static void sonic_tx_timeout(struct net_device *dev)
{
struct sonic_local *lp = (struct sonic_local *) dev->priv;
printk("%s: transmit timed out.\n", dev->name);
struct sonic_local *lp = netdev_priv(dev);
int i;
/* Stop the interrupts for this */
SONIC_WRITE(SONIC_IMR, 0);
/* We could resend the original skbs. Easier to re-initialise. */
for (i = 0; i < SONIC_NUM_TDS; i++) {
if(lp->tx_laddr[i]) {
dma_unmap_single(lp->device, lp->tx_laddr[i], lp->tx_len[i], DMA_TO_DEVICE);
lp->tx_laddr[i] = (dma_addr_t)0;
}
if(lp->tx_skb[i]) {
dev_kfree_skb(lp->tx_skb[i]);
lp->tx_skb[i] = NULL;
}
}
/* Try to restart the adaptor. */
sonic_init(dev);
lp->stats.tx_errors++;
@ -100,60 +201,92 @@ static void sonic_tx_timeout(struct net_device *dev)
/*
* transmit packet
*
* Appends new TD during transmission thus avoiding any TX interrupts
* until we run out of TDs.
* This routine interacts closely with the ISR in that it may,
* set tx_skb[i]
* reset the status flags of the new TD
* set and reset EOL flags
* stop the tx queue
* The ISR interacts with this routine in various ways. It may,
* reset tx_skb[i]
* test the EOL and status flags of the TDs
* wake the tx queue
* Concurrently with all of this, the SONIC is potentially writing to
* the status flags of the TDs.
* Until some mutual exclusion is added, this code will not work with SMP. However,
* MIPS Jazz machines and m68k Macs were all uni-processor machines.
*/
static int sonic_send_packet(struct sk_buff *skb, struct net_device *dev)
{
struct sonic_local *lp = (struct sonic_local *) dev->priv;
unsigned int base_addr = dev->base_addr;
unsigned int laddr;
int entry, length;
netif_stop_queue(dev);
struct sonic_local *lp = netdev_priv(dev);
dma_addr_t laddr;
int length;
int entry = lp->next_tx;
if (sonic_debug > 2)
printk("sonic_send_packet: skb=%p, dev=%p\n", skb, dev);
length = skb->len;
if (length < ETH_ZLEN) {
skb = skb_padto(skb, ETH_ZLEN);
if (skb == NULL)
return 0;
length = ETH_ZLEN;
}
/*
* Map the packet data into the logical DMA address space
*/
if ((laddr = vdma_alloc(CPHYSADDR(skb->data), skb->len)) == ~0UL) {
printk("%s: no VDMA entry for transmit available.\n",
dev->name);
laddr = dma_map_single(lp->device, skb->data, length, DMA_TO_DEVICE);
if (!laddr) {
printk(KERN_ERR "%s: failed to map tx DMA buffer.\n", dev->name);
dev_kfree_skb(skb);
netif_start_queue(dev);
return 1;
}
entry = lp->cur_tx & SONIC_TDS_MASK;
sonic_tda_put(dev, entry, SONIC_TD_STATUS, 0); /* clear status */
sonic_tda_put(dev, entry, SONIC_TD_FRAG_COUNT, 1); /* single fragment */
sonic_tda_put(dev, entry, SONIC_TD_PKTSIZE, length); /* length of packet */
sonic_tda_put(dev, entry, SONIC_TD_FRAG_PTR_L, laddr & 0xffff);
sonic_tda_put(dev, entry, SONIC_TD_FRAG_PTR_H, laddr >> 16);
sonic_tda_put(dev, entry, SONIC_TD_FRAG_SIZE, length);
sonic_tda_put(dev, entry, SONIC_TD_LINK,
sonic_tda_get(dev, entry, SONIC_TD_LINK) | SONIC_EOL);
/*
* Must set tx_skb[entry] only after clearing status, and
* before clearing EOL and before stopping queue
*/
wmb();
lp->tx_len[entry] = length;
lp->tx_laddr[entry] = laddr;
lp->tx_skb[entry] = skb;
length = (skb->len < ETH_ZLEN) ? ETH_ZLEN : skb->len;
flush_cache_all();
wmb();
sonic_tda_put(dev, lp->eol_tx, SONIC_TD_LINK,
sonic_tda_get(dev, lp->eol_tx, SONIC_TD_LINK) & ~SONIC_EOL);
lp->eol_tx = entry;
/*
* Setup the transmit descriptor and issue the transmit command.
*/
lp->tda[entry].tx_status = 0; /* clear status */
lp->tda[entry].tx_frag_count = 1; /* single fragment */
lp->tda[entry].tx_pktsize = length; /* length of packet */
lp->tda[entry].tx_frag_ptr_l = laddr & 0xffff;
lp->tda[entry].tx_frag_ptr_h = laddr >> 16;
lp->tda[entry].tx_frag_size = length;
lp->cur_tx++;
lp->stats.tx_bytes += length;
lp->next_tx = (entry + 1) & SONIC_TDS_MASK;
if (lp->tx_skb[lp->next_tx] != NULL) {
/* The ring is full, the ISR has yet to process the next TD. */
if (sonic_debug > 3)
printk("%s: stopping queue\n", dev->name);
netif_stop_queue(dev);
/* after this packet, wait for ISR to free up some TDAs */
} else netif_start_queue(dev);
if (sonic_debug > 2)
printk("sonic_send_packet: issueing Tx command\n");
printk("sonic_send_packet: issuing Tx command\n");
SONIC_WRITE(SONIC_CMD, SONIC_CR_TXP);
dev->trans_start = jiffies;
if (lp->cur_tx < lp->dirty_tx + SONIC_NUM_TDS)
netif_start_queue(dev);
else
lp->tx_full = 1;
return 0;
}
@ -164,175 +297,199 @@ static int sonic_send_packet(struct sk_buff *skb, struct net_device *dev)
static irqreturn_t sonic_interrupt(int irq, void *dev_id, struct pt_regs *regs)
{
struct net_device *dev = (struct net_device *) dev_id;
unsigned int base_addr = dev->base_addr;
struct sonic_local *lp;
struct sonic_local *lp = netdev_priv(dev);
int status;
if (dev == NULL) {
printk("sonic_interrupt: irq %d for unknown device.\n", irq);
printk(KERN_ERR "sonic_interrupt: irq %d for unknown device.\n", irq);
return IRQ_NONE;
}
lp = (struct sonic_local *) dev->priv;
if (!(status = SONIC_READ(SONIC_ISR) & SONIC_IMR_DEFAULT))
return IRQ_NONE;
status = SONIC_READ(SONIC_ISR);
SONIC_WRITE(SONIC_ISR, 0x7fff); /* clear all bits */
do {
if (status & SONIC_INT_PKTRX) {
if (sonic_debug > 2)
printk("%s: packet rx\n", dev->name);
sonic_rx(dev); /* got packet(s) */
SONIC_WRITE(SONIC_ISR, SONIC_INT_PKTRX); /* clear the interrupt */
}
if (sonic_debug > 2)
printk("sonic_interrupt: ISR=%x\n", status);
if (status & SONIC_INT_TXDN) {
int entry = lp->cur_tx;
int td_status;
int freed_some = 0;
if (status & SONIC_INT_PKTRX) {
sonic_rx(dev); /* got packet(s) */
}
/* At this point, cur_tx is the index of a TD that is one of:
* unallocated/freed (status set & tx_skb[entry] clear)
* allocated and sent (status set & tx_skb[entry] set )
* allocated and not yet sent (status clear & tx_skb[entry] set )
* still being allocated by sonic_send_packet (status clear & tx_skb[entry] clear)
*/
if (status & SONIC_INT_TXDN) {
int dirty_tx = lp->dirty_tx;
if (sonic_debug > 2)
printk("%s: tx done\n", dev->name);
while (dirty_tx < lp->cur_tx) {
int entry = dirty_tx & SONIC_TDS_MASK;
int status = lp->tda[entry].tx_status;
while (lp->tx_skb[entry] != NULL) {
if ((td_status = sonic_tda_get(dev, entry, SONIC_TD_STATUS)) == 0)
break;
if (sonic_debug > 3)
printk
("sonic_interrupt: status %d, cur_tx %d, dirty_tx %d\n",
status, lp->cur_tx, lp->dirty_tx);
if (td_status & 0x0001) {
lp->stats.tx_packets++;
lp->stats.tx_bytes += sonic_tda_get(dev, entry, SONIC_TD_PKTSIZE);
} else {
lp->stats.tx_errors++;
if (td_status & 0x0642)
lp->stats.tx_aborted_errors++;
if (td_status & 0x0180)
lp->stats.tx_carrier_errors++;
if (td_status & 0x0020)
lp->stats.tx_window_errors++;
if (td_status & 0x0004)
lp->stats.tx_fifo_errors++;
}
if (status == 0) {
/* It still hasn't been Txed, kick the sonic again */
SONIC_WRITE(SONIC_CMD, SONIC_CR_TXP);
break;
}
/* put back EOL and free descriptor */
lp->tda[entry].tx_frag_count = 0;
lp->tda[entry].tx_status = 0;
if (status & 0x0001)
lp->stats.tx_packets++;
else {
lp->stats.tx_errors++;
if (status & 0x0642)
lp->stats.tx_aborted_errors++;
if (status & 0x0180)
lp->stats.tx_carrier_errors++;
if (status & 0x0020)
lp->stats.tx_window_errors++;
if (status & 0x0004)
lp->stats.tx_fifo_errors++;
}
/* We must free the original skb */
if (lp->tx_skb[entry]) {
/* We must free the original skb */
dev_kfree_skb_irq(lp->tx_skb[entry]);
lp->tx_skb[entry] = 0;
lp->tx_skb[entry] = NULL;
/* and unmap DMA buffer */
dma_unmap_single(lp->device, lp->tx_laddr[entry], lp->tx_len[entry], DMA_TO_DEVICE);
lp->tx_laddr[entry] = (dma_addr_t)0;
freed_some = 1;
if (sonic_tda_get(dev, entry, SONIC_TD_LINK) & SONIC_EOL) {
entry = (entry + 1) & SONIC_TDS_MASK;
break;
}
entry = (entry + 1) & SONIC_TDS_MASK;
}
/* and the VDMA address */
vdma_free(lp->tx_laddr[entry]);
dirty_tx++;
if (freed_some || lp->tx_skb[entry] == NULL)
netif_wake_queue(dev); /* The ring is no longer full */
lp->cur_tx = entry;
SONIC_WRITE(SONIC_ISR, SONIC_INT_TXDN); /* clear the interrupt */
}
if (lp->tx_full
&& dirty_tx + SONIC_NUM_TDS > lp->cur_tx + 2) {
/* The ring is no longer full, clear tbusy. */
lp->tx_full = 0;
netif_wake_queue(dev);
/*
* check error conditions
*/
if (status & SONIC_INT_RFO) {
if (sonic_debug > 1)
printk("%s: rx fifo overrun\n", dev->name);
lp->stats.rx_fifo_errors++;
SONIC_WRITE(SONIC_ISR, SONIC_INT_RFO); /* clear the interrupt */
}
if (status & SONIC_INT_RDE) {
if (sonic_debug > 1)
printk("%s: rx descriptors exhausted\n", dev->name);
lp->stats.rx_dropped++;
SONIC_WRITE(SONIC_ISR, SONIC_INT_RDE); /* clear the interrupt */
}
if (status & SONIC_INT_RBAE) {
if (sonic_debug > 1)
printk("%s: rx buffer area exceeded\n", dev->name);
lp->stats.rx_dropped++;
SONIC_WRITE(SONIC_ISR, SONIC_INT_RBAE); /* clear the interrupt */
}
lp->dirty_tx = dirty_tx;
}
/* counter overruns; all counters are 16bit wide */
if (status & SONIC_INT_FAE) {
lp->stats.rx_frame_errors += 65536;
SONIC_WRITE(SONIC_ISR, SONIC_INT_FAE); /* clear the interrupt */
}
if (status & SONIC_INT_CRC) {
lp->stats.rx_crc_errors += 65536;
SONIC_WRITE(SONIC_ISR, SONIC_INT_CRC); /* clear the interrupt */
}
if (status & SONIC_INT_MP) {
lp->stats.rx_missed_errors += 65536;
SONIC_WRITE(SONIC_ISR, SONIC_INT_MP); /* clear the interrupt */
}
/*
* check error conditions
*/
if (status & SONIC_INT_RFO) {
printk("%s: receive fifo underrun\n", dev->name);
lp->stats.rx_fifo_errors++;
}
if (status & SONIC_INT_RDE) {
printk("%s: receive descriptors exhausted\n", dev->name);
lp->stats.rx_dropped++;
}
if (status & SONIC_INT_RBE) {
printk("%s: receive buffer exhausted\n", dev->name);
lp->stats.rx_dropped++;
}
if (status & SONIC_INT_RBAE) {
printk("%s: receive buffer area exhausted\n", dev->name);
lp->stats.rx_dropped++;
}
/* transmit error */
if (status & SONIC_INT_TXER) {
if ((SONIC_READ(SONIC_TCR) & SONIC_TCR_FU) && (sonic_debug > 2))
printk(KERN_ERR "%s: tx fifo underrun\n", dev->name);
SONIC_WRITE(SONIC_ISR, SONIC_INT_TXER); /* clear the interrupt */
}
/* counter overruns; all counters are 16bit wide */
if (status & SONIC_INT_FAE)
lp->stats.rx_frame_errors += 65536;
if (status & SONIC_INT_CRC)
lp->stats.rx_crc_errors += 65536;
if (status & SONIC_INT_MP)
lp->stats.rx_missed_errors += 65536;
/* bus retry */
if (status & SONIC_INT_BR) {
printk(KERN_ERR "%s: Bus retry occurred! Device interrupt disabled.\n",
dev->name);
/* ... to help debug DMA problems causing endless interrupts. */
/* Bounce the eth interface to turn on the interrupt again. */
SONIC_WRITE(SONIC_IMR, 0);
SONIC_WRITE(SONIC_ISR, SONIC_INT_BR); /* clear the interrupt */
}
/* transmit error */
if (status & SONIC_INT_TXER)
lp->stats.tx_errors++;
/*
* clear interrupt bits and return
*/
SONIC_WRITE(SONIC_ISR, status);
/* load CAM done */
if (status & SONIC_INT_LCD)
SONIC_WRITE(SONIC_ISR, SONIC_INT_LCD); /* clear the interrupt */
} while((status = SONIC_READ(SONIC_ISR) & SONIC_IMR_DEFAULT));
return IRQ_HANDLED;
}
/*
* We have a good packet(s), get it/them out of the buffers.
* We have a good packet(s), pass it/them up the network stack.
*/
static void sonic_rx(struct net_device *dev)
{
unsigned int base_addr = dev->base_addr;
struct sonic_local *lp = (struct sonic_local *) dev->priv;
sonic_rd_t *rd = &lp->rda[lp->cur_rx & SONIC_RDS_MASK];
struct sonic_local *lp = netdev_priv(dev);
int status;
int entry = lp->cur_rx;
while (rd->in_use == 0) {
struct sk_buff *skb;
while (sonic_rda_get(dev, entry, SONIC_RD_IN_USE) == 0) {
struct sk_buff *used_skb;
struct sk_buff *new_skb;
dma_addr_t new_laddr;
u16 bufadr_l;
u16 bufadr_h;
int pkt_len;
unsigned char *pkt_ptr;
status = rd->rx_status;
if (sonic_debug > 3)
printk("status %x, cur_rx %d, cur_rra %x\n",
status, lp->cur_rx, lp->cur_rra);
status = sonic_rda_get(dev, entry, SONIC_RD_STATUS);
if (status & SONIC_RCR_PRX) {
pkt_len = rd->rx_pktlen;
pkt_ptr =
(char *)
sonic_chiptomem((rd->rx_pktptr_h << 16) +
rd->rx_pktptr_l);
if (sonic_debug > 3)
printk
("pktptr %p (rba %p) h:%x l:%x, bsize h:%x l:%x\n",
pkt_ptr, lp->rba, rd->rx_pktptr_h,
rd->rx_pktptr_l,
SONIC_READ(SONIC_RBWC1),
SONIC_READ(SONIC_RBWC0));
/* Malloc up new buffer. */
skb = dev_alloc_skb(pkt_len + 2);
if (skb == NULL) {
printk
("%s: Memory squeeze, dropping packet.\n",
dev->name);
new_skb = dev_alloc_skb(SONIC_RBSIZE + 2);
if (new_skb == NULL) {
printk(KERN_ERR "%s: Memory squeeze, dropping packet.\n", dev->name);
lp->stats.rx_dropped++;
break;
}
skb->dev = dev;
skb_reserve(skb, 2); /* 16 byte align */
skb_put(skb, pkt_len); /* Make room */
eth_copy_and_sum(skb, pkt_ptr, pkt_len, 0);
skb->protocol = eth_type_trans(skb, dev);
netif_rx(skb); /* pass the packet to upper layers */
new_skb->dev = dev;
/* provide 16 byte IP header alignment unless DMA requires otherwise */
if(SONIC_BUS_SCALE(lp->dma_bitmode) == 2)
skb_reserve(new_skb, 2);
new_laddr = dma_map_single(lp->device, skb_put(new_skb, SONIC_RBSIZE),
SONIC_RBSIZE, DMA_FROM_DEVICE);
if (!new_laddr) {
dev_kfree_skb(new_skb);
printk(KERN_ERR "%s: Failed to map rx buffer, dropping packet.\n", dev->name);
lp->stats.rx_dropped++;
break;
}
/* now we have a new skb to replace it, pass the used one up the stack */
dma_unmap_single(lp->device, lp->rx_laddr[entry], SONIC_RBSIZE, DMA_FROM_DEVICE);
used_skb = lp->rx_skb[entry];
pkt_len = sonic_rda_get(dev, entry, SONIC_RD_PKTLEN);
skb_trim(used_skb, pkt_len);
used_skb->protocol = eth_type_trans(used_skb, dev);
netif_rx(used_skb);
dev->last_rx = jiffies;
lp->stats.rx_packets++;
lp->stats.rx_bytes += pkt_len;
/* and insert the new skb */
lp->rx_laddr[entry] = new_laddr;
lp->rx_skb[entry] = new_skb;
bufadr_l = (unsigned long)new_laddr & 0xffff;
bufadr_h = (unsigned long)new_laddr >> 16;
sonic_rra_put(dev, entry, SONIC_RR_BUFADR_L, bufadr_l);
sonic_rra_put(dev, entry, SONIC_RR_BUFADR_H, bufadr_h);
} else {
/* This should only happen, if we enable accepting broken packets. */
lp->stats.rx_errors++;
@ -341,29 +498,35 @@ static void sonic_rx(struct net_device *dev)
if (status & SONIC_RCR_CRCR)
lp->stats.rx_crc_errors++;
}
rd->in_use = 1;
rd = &lp->rda[(++lp->cur_rx) & SONIC_RDS_MASK];
/* now give back the buffer to the receive buffer area */
if (status & SONIC_RCR_LPKT) {
/*
* this was the last packet out of the current receice buffer
* this was the last packet out of the current receive buffer
* give the buffer back to the SONIC
*/
lp->cur_rra += sizeof(sonic_rr_t);
if (lp->cur_rra >
(lp->rra_laddr +
(SONIC_NUM_RRS -
1) * sizeof(sonic_rr_t))) lp->cur_rra =
lp->rra_laddr;
SONIC_WRITE(SONIC_RWP, lp->cur_rra & 0xffff);
lp->cur_rwp += SIZEOF_SONIC_RR * SONIC_BUS_SCALE(lp->dma_bitmode);
if (lp->cur_rwp >= lp->rra_end) lp->cur_rwp = lp->rra_laddr & 0xffff;
SONIC_WRITE(SONIC_RWP, lp->cur_rwp);
if (SONIC_READ(SONIC_ISR) & SONIC_INT_RBE) {
if (sonic_debug > 2)
printk("%s: rx buffer exhausted\n", dev->name);
SONIC_WRITE(SONIC_ISR, SONIC_INT_RBE); /* clear the flag */
}
} else
printk
("%s: rx desc without RCR_LPKT. Shouldn't happen !?\n",
printk(KERN_ERR "%s: rx desc without RCR_LPKT. Shouldn't happen !?\n",
dev->name);
/*
* give back the descriptor
*/
sonic_rda_put(dev, entry, SONIC_RD_LINK,
sonic_rda_get(dev, entry, SONIC_RD_LINK) | SONIC_EOL);
sonic_rda_put(dev, entry, SONIC_RD_IN_USE, 1);
sonic_rda_put(dev, lp->eol_rx, SONIC_RD_LINK,
sonic_rda_get(dev, lp->eol_rx, SONIC_RD_LINK) & ~SONIC_EOL);
lp->eol_rx = entry;
lp->cur_rx = entry = (entry + 1) & SONIC_RDS_MASK;
}
/*
* If any worth-while packets have been received, dev_rint()
* If any worth-while packets have been received, netif_rx()
* has done a mark_bh(NET_BH) for us and will work on them
* when we get to the bottom-half routine.
*/
@ -376,8 +539,7 @@ static void sonic_rx(struct net_device *dev)
*/
static struct net_device_stats *sonic_get_stats(struct net_device *dev)
{
struct sonic_local *lp = (struct sonic_local *) dev->priv;
unsigned int base_addr = dev->base_addr;
struct sonic_local *lp = netdev_priv(dev);
/* read the tally counter from the SONIC and reset them */
lp->stats.rx_crc_errors += SONIC_READ(SONIC_CRCT);
@ -396,8 +558,7 @@ static struct net_device_stats *sonic_get_stats(struct net_device *dev)
*/
static void sonic_multicast_list(struct net_device *dev)
{
struct sonic_local *lp = (struct sonic_local *) dev->priv;
unsigned int base_addr = dev->base_addr;
struct sonic_local *lp = netdev_priv(dev);
unsigned int rcr;
struct dev_mc_list *dmi = dev->mc_list;
unsigned char *addr;
@ -413,20 +574,15 @@ static void sonic_multicast_list(struct net_device *dev)
rcr |= SONIC_RCR_AMC;
} else {
if (sonic_debug > 2)
printk
("sonic_multicast_list: mc_count %d\n",
dev->mc_count);
lp->cda.cam_enable = 1; /* always enable our own address */
printk("sonic_multicast_list: mc_count %d\n", dev->mc_count);
sonic_set_cam_enable(dev, 1); /* always enable our own address */
for (i = 1; i <= dev->mc_count; i++) {
addr = dmi->dmi_addr;
dmi = dmi->next;
lp->cda.cam_desc[i].cam_cap0 =
addr[1] << 8 | addr[0];
lp->cda.cam_desc[i].cam_cap1 =
addr[3] << 8 | addr[2];
lp->cda.cam_desc[i].cam_cap2 =
addr[5] << 8 | addr[4];
lp->cda.cam_enable |= (1 << i);
sonic_cda_put(dev, i, SONIC_CD_CAP0, addr[1] << 8 | addr[0]);
sonic_cda_put(dev, i, SONIC_CD_CAP1, addr[3] << 8 | addr[2]);
sonic_cda_put(dev, i, SONIC_CD_CAP2, addr[5] << 8 | addr[4]);
sonic_set_cam_enable(dev, sonic_get_cam_enable(dev) | (1 << i));
}
SONIC_WRITE(SONIC_CDC, 16);
/* issue Load CAM command */
@ -447,19 +603,16 @@ static void sonic_multicast_list(struct net_device *dev)
*/
static int sonic_init(struct net_device *dev)
{
unsigned int base_addr = dev->base_addr;
unsigned int cmd;
struct sonic_local *lp = (struct sonic_local *) dev->priv;
unsigned int rra_start;
unsigned int rra_end;
struct sonic_local *lp = netdev_priv(dev);
int i;
/*
* put the Sonic into software-reset mode and
* disable all interrupts
*/
SONIC_WRITE(SONIC_ISR, 0x7fff);
SONIC_WRITE(SONIC_IMR, 0);
SONIC_WRITE(SONIC_ISR, 0x7fff);
SONIC_WRITE(SONIC_CMD, SONIC_CR_RST);
/*
@ -475,34 +628,32 @@ static int sonic_init(struct net_device *dev)
if (sonic_debug > 2)
printk("sonic_init: initialize receive resource area\n");
rra_start = lp->rra_laddr & 0xffff;
rra_end =
(rra_start + (SONIC_NUM_RRS * sizeof(sonic_rr_t))) & 0xffff;
for (i = 0; i < SONIC_NUM_RRS; i++) {
lp->rra[i].rx_bufadr_l =
(lp->rba_laddr + i * SONIC_RBSIZE) & 0xffff;
lp->rra[i].rx_bufadr_h =
(lp->rba_laddr + i * SONIC_RBSIZE) >> 16;
lp->rra[i].rx_bufsize_l = SONIC_RBSIZE >> 1;
lp->rra[i].rx_bufsize_h = 0;
u16 bufadr_l = (unsigned long)lp->rx_laddr[i] & 0xffff;
u16 bufadr_h = (unsigned long)lp->rx_laddr[i] >> 16;
sonic_rra_put(dev, i, SONIC_RR_BUFADR_L, bufadr_l);
sonic_rra_put(dev, i, SONIC_RR_BUFADR_H, bufadr_h);
sonic_rra_put(dev, i, SONIC_RR_BUFSIZE_L, SONIC_RBSIZE >> 1);
sonic_rra_put(dev, i, SONIC_RR_BUFSIZE_H, 0);
}
/* initialize all RRA registers */
SONIC_WRITE(SONIC_RSA, rra_start);
SONIC_WRITE(SONIC_REA, rra_end);
SONIC_WRITE(SONIC_RRP, rra_start);
SONIC_WRITE(SONIC_RWP, rra_end);
lp->rra_end = (lp->rra_laddr + SONIC_NUM_RRS * SIZEOF_SONIC_RR *
SONIC_BUS_SCALE(lp->dma_bitmode)) & 0xffff;
lp->cur_rwp = (lp->rra_laddr + (SONIC_NUM_RRS - 1) * SIZEOF_SONIC_RR *
SONIC_BUS_SCALE(lp->dma_bitmode)) & 0xffff;
SONIC_WRITE(SONIC_RSA, lp->rra_laddr & 0xffff);
SONIC_WRITE(SONIC_REA, lp->rra_end);
SONIC_WRITE(SONIC_RRP, lp->rra_laddr & 0xffff);
SONIC_WRITE(SONIC_RWP, lp->cur_rwp);
SONIC_WRITE(SONIC_URRA, lp->rra_laddr >> 16);
SONIC_WRITE(SONIC_EOBC, (SONIC_RBSIZE - 2) >> 1);
lp->cur_rra =
lp->rra_laddr + (SONIC_NUM_RRS - 1) * sizeof(sonic_rr_t);
SONIC_WRITE(SONIC_EOBC, (SONIC_RBSIZE >> 1) - (lp->dma_bitmode ? 2 : 1));
/* load the resource pointers */
if (sonic_debug > 3)
printk("sonic_init: issueing RRRA command\n");
printk("sonic_init: issuing RRRA command\n");
SONIC_WRITE(SONIC_CMD, SONIC_CR_RRRA);
i = 0;
while (i++ < 100) {
@ -511,27 +662,30 @@ static int sonic_init(struct net_device *dev)
}
if (sonic_debug > 2)
printk("sonic_init: status=%x\n", SONIC_READ(SONIC_CMD));
printk("sonic_init: status=%x i=%d\n", SONIC_READ(SONIC_CMD), i);
/*
* Initialize the receive descriptors so that they
* become a circular linked list, ie. let the last
* descriptor point to the first again.
*/
if (sonic_debug > 2)
printk("sonic_init: initialize receive descriptors\n");
for (i = 0; i < SONIC_NUM_RDS; i++) {
lp->rda[i].rx_status = 0;
lp->rda[i].rx_pktlen = 0;
lp->rda[i].rx_pktptr_l = 0;
lp->rda[i].rx_pktptr_h = 0;
lp->rda[i].rx_seqno = 0;
lp->rda[i].in_use = 1;
lp->rda[i].link =
lp->rda_laddr + (i + 1) * sizeof(sonic_rd_t);
printk("sonic_init: initialize receive descriptors\n");
for (i=0; i<SONIC_NUM_RDS; i++) {
sonic_rda_put(dev, i, SONIC_RD_STATUS, 0);
sonic_rda_put(dev, i, SONIC_RD_PKTLEN, 0);
sonic_rda_put(dev, i, SONIC_RD_PKTPTR_L, 0);
sonic_rda_put(dev, i, SONIC_RD_PKTPTR_H, 0);
sonic_rda_put(dev, i, SONIC_RD_SEQNO, 0);
sonic_rda_put(dev, i, SONIC_RD_IN_USE, 1);
sonic_rda_put(dev, i, SONIC_RD_LINK,
lp->rda_laddr +
((i+1) * SIZEOF_SONIC_RD * SONIC_BUS_SCALE(lp->dma_bitmode)));
}
/* fix last descriptor */
lp->rda[SONIC_NUM_RDS - 1].link = lp->rda_laddr;
sonic_rda_put(dev, SONIC_NUM_RDS - 1, SONIC_RD_LINK,
(lp->rda_laddr & 0xffff) | SONIC_EOL);
lp->eol_rx = SONIC_NUM_RDS - 1;
lp->cur_rx = 0;
SONIC_WRITE(SONIC_URDA, lp->rda_laddr >> 16);
SONIC_WRITE(SONIC_CRDA, lp->rda_laddr & 0xffff);
@ -542,34 +696,34 @@ static int sonic_init(struct net_device *dev)
if (sonic_debug > 2)
printk("sonic_init: initialize transmit descriptors\n");
for (i = 0; i < SONIC_NUM_TDS; i++) {
lp->tda[i].tx_status = 0;
lp->tda[i].tx_config = 0;
lp->tda[i].tx_pktsize = 0;
lp->tda[i].tx_frag_count = 0;
lp->tda[i].link =
(lp->tda_laddr +
(i + 1) * sizeof(sonic_td_t)) | SONIC_END_OF_LINKS;
sonic_tda_put(dev, i, SONIC_TD_STATUS, 0);
sonic_tda_put(dev, i, SONIC_TD_CONFIG, 0);
sonic_tda_put(dev, i, SONIC_TD_PKTSIZE, 0);
sonic_tda_put(dev, i, SONIC_TD_FRAG_COUNT, 0);
sonic_tda_put(dev, i, SONIC_TD_LINK,
(lp->tda_laddr & 0xffff) +
(i + 1) * SIZEOF_SONIC_TD * SONIC_BUS_SCALE(lp->dma_bitmode));
lp->tx_skb[i] = NULL;
}
lp->tda[SONIC_NUM_TDS - 1].link =
(lp->tda_laddr & 0xffff) | SONIC_END_OF_LINKS;
/* fix last descriptor */
sonic_tda_put(dev, SONIC_NUM_TDS - 1, SONIC_TD_LINK,
(lp->tda_laddr & 0xffff));
SONIC_WRITE(SONIC_UTDA, lp->tda_laddr >> 16);
SONIC_WRITE(SONIC_CTDA, lp->tda_laddr & 0xffff);
lp->cur_tx = lp->dirty_tx = 0;
lp->cur_tx = lp->next_tx = 0;
lp->eol_tx = SONIC_NUM_TDS - 1;
/*
* put our own address to CAM desc[0]
*/
lp->cda.cam_desc[0].cam_cap0 =
dev->dev_addr[1] << 8 | dev->dev_addr[0];
lp->cda.cam_desc[0].cam_cap1 =
dev->dev_addr[3] << 8 | dev->dev_addr[2];
lp->cda.cam_desc[0].cam_cap2 =
dev->dev_addr[5] << 8 | dev->dev_addr[4];
lp->cda.cam_enable = 1;
sonic_cda_put(dev, 0, SONIC_CD_CAP0, dev->dev_addr[1] << 8 | dev->dev_addr[0]);
sonic_cda_put(dev, 0, SONIC_CD_CAP1, dev->dev_addr[3] << 8 | dev->dev_addr[2]);
sonic_cda_put(dev, 0, SONIC_CD_CAP2, dev->dev_addr[5] << 8 | dev->dev_addr[4]);
sonic_set_cam_enable(dev, 1);
for (i = 0; i < 16; i++)
lp->cda.cam_desc[i].cam_entry_pointer = i;
sonic_cda_put(dev, i, SONIC_CD_ENTRY_POINTER, i);
/*
* initialize CAM registers
@ -588,8 +742,8 @@ static int sonic_init(struct net_device *dev)
break;
}
if (sonic_debug > 2) {
printk("sonic_init: CMD=%x, ISR=%x\n",
SONIC_READ(SONIC_CMD), SONIC_READ(SONIC_ISR));
printk("sonic_init: CMD=%x, ISR=%x\n, i=%d",
SONIC_READ(SONIC_CMD), SONIC_READ(SONIC_ISR), i);
}
/*
@ -604,7 +758,7 @@ static int sonic_init(struct net_device *dev)
cmd = SONIC_READ(SONIC_CMD);
if ((cmd & SONIC_CR_RXEN) == 0 || (cmd & SONIC_CR_STP) == 0)
printk("sonic_init: failed, status=%x\n", cmd);
printk(KERN_ERR "sonic_init: failed, status=%x\n", cmd);
if (sonic_debug > 2)
printk("sonic_init: new status=%x\n",

450
drivers/net/sonic.h
View file

@ -1,5 +1,5 @@
/*
* Helpfile for sonic.c
* Header file for sonic.c
*
* (C) Waldorf Electronics, Germany
* Written by Andreas Busse
@ -9,10 +9,16 @@
* and pad structure members must be exchanged. Also, the structures
* need to be changed accordingly to the bus size.
*
* 981229 MSch: did just that for the 68k Mac port (32 bit, big endian),
* see CONFIG_MACSONIC branch below.
* 981229 MSch: did just that for the 68k Mac port (32 bit, big endian)
*
* 990611 David Huggins-Daines <dhd@debian.org>: This machine abstraction
* does not cope with 16-bit bus sizes very well. Therefore I have
* rewritten it with ugly macros and evil inlines.
*
* 050625 Finn Thain: introduced more 32-bit cards and dhd's support
* for 16-bit cards (from the mac68k project).
*/
#ifndef SONIC_H
#define SONIC_H
@ -83,6 +89,7 @@
/*
* Error counters
*/
#define SONIC_CRCT 0x2c
#define SONIC_FAET 0x2d
#define SONIC_MPT 0x2e
@ -182,14 +189,14 @@
#define SONIC_INT_BR 0x4000
#define SONIC_INT_HBL 0x2000
#define SONIC_INT_LCD 0x1000
#define SONIC_INT_PINT 0x0800
#define SONIC_INT_PKTRX 0x0400
#define SONIC_INT_TXDN 0x0200
#define SONIC_INT_TXER 0x0100
#define SONIC_INT_TC 0x0080
#define SONIC_INT_RDE 0x0040
#define SONIC_INT_RBE 0x0020
#define SONIC_INT_LCD 0x1000
#define SONIC_INT_PINT 0x0800
#define SONIC_INT_PKTRX 0x0400
#define SONIC_INT_TXDN 0x0200
#define SONIC_INT_TXER 0x0100
#define SONIC_INT_TC 0x0080
#define SONIC_INT_RDE 0x0040
#define SONIC_INT_RBE 0x0020
#define SONIC_INT_RBAE 0x0010
#define SONIC_INT_CRC 0x0008
#define SONIC_INT_FAE 0x0004
@ -201,224 +208,61 @@
* The interrupts we allow.
*/
#define SONIC_IMR_DEFAULT (SONIC_INT_BR | \
SONIC_INT_LCD | \
SONIC_INT_PINT | \
#define SONIC_IMR_DEFAULT ( SONIC_INT_BR | \
SONIC_INT_LCD | \
SONIC_INT_RFO | \
SONIC_INT_PKTRX | \
SONIC_INT_TXDN | \
SONIC_INT_TXER | \
SONIC_INT_RDE | \
SONIC_INT_RBE | \
SONIC_INT_RBAE | \
SONIC_INT_CRC | \
SONIC_INT_FAE | \
SONIC_INT_MP)
#define SONIC_END_OF_LINKS 0x0001
#ifdef CONFIG_MACSONIC
/*
* Big endian like structures on 680x0 Macs
*/
typedef struct {
u32 rx_bufadr_l; /* receive buffer ptr */
u32 rx_bufadr_h;
u32 rx_bufsize_l; /* no. of words in the receive buffer */
u32 rx_bufsize_h;
} sonic_rr_t;
/*
* Sonic receive descriptor. Receive descriptors are
* kept in a linked list of these structures.
*/
typedef struct {
SREGS_PAD(pad0);
u16 rx_status; /* status after reception of a packet */
SREGS_PAD(pad1);
u16 rx_pktlen; /* length of the packet incl. CRC */
/*
* Pointers to the location in the receive buffer area (RBA)
* where the packet resides. A packet is always received into
* a contiguous piece of memory.
*/
SREGS_PAD(pad2);
u16 rx_pktptr_l;
SREGS_PAD(pad3);
u16 rx_pktptr_h;
SREGS_PAD(pad4);
u16 rx_seqno; /* sequence no. */
SREGS_PAD(pad5);
u16 link; /* link to next RDD (end if EOL bit set) */
/*
* Owner of this descriptor, 0= driver, 1=sonic
*/
SREGS_PAD(pad6);
u16 in_use;
caddr_t rda_next; /* pointer to next RD */
} sonic_rd_t;
/*
* Describes a Transmit Descriptor
*/
typedef struct {
SREGS_PAD(pad0);
u16 tx_status; /* status after transmission of a packet */
SREGS_PAD(pad1);
u16 tx_config; /* transmit configuration for this packet */
SREGS_PAD(pad2);
u16 tx_pktsize; /* size of the packet to be transmitted */
SREGS_PAD(pad3);
u16 tx_frag_count; /* no. of fragments */
SREGS_PAD(pad4);
u16 tx_frag_ptr_l;
SREGS_PAD(pad5);
u16 tx_frag_ptr_h;
SREGS_PAD(pad6);
u16 tx_frag_size;
SREGS_PAD(pad7);
u16 link; /* ptr to next descriptor */
} sonic_td_t;
/*
* Describes an entry in the CAM Descriptor Area.
*/
typedef struct {
SREGS_PAD(pad0);
u16 cam_entry_pointer;
SREGS_PAD(pad1);
u16 cam_cap0;
SREGS_PAD(pad2);
u16 cam_cap1;
SREGS_PAD(pad3);
u16 cam_cap2;
} sonic_cd_t;
#define SONIC_EOL 0x0001
#define CAM_DESCRIPTORS 16
/* Offsets in the various DMA buffers accessed by the SONIC */
typedef struct {
sonic_cd_t cam_desc[CAM_DESCRIPTORS];
SREGS_PAD(pad);
u16 cam_enable;
} sonic_cda_t;
#define SONIC_BITMODE16 0
#define SONIC_BITMODE32 1
#define SONIC_BUS_SCALE(bitmode) ((bitmode) ? 4 : 2)
/* Note! These are all measured in bus-size units, so use SONIC_BUS_SCALE */
#define SIZEOF_SONIC_RR 4
#define SONIC_RR_BUFADR_L 0
#define SONIC_RR_BUFADR_H 1
#define SONIC_RR_BUFSIZE_L 2
#define SONIC_RR_BUFSIZE_H 3
#else /* original declarations, little endian 32 bit */
#define SIZEOF_SONIC_RD 7
#define SONIC_RD_STATUS 0
#define SONIC_RD_PKTLEN 1
#define SONIC_RD_PKTPTR_L 2
#define SONIC_RD_PKTPTR_H 3
#define SONIC_RD_SEQNO 4
#define SONIC_RD_LINK 5
#define SONIC_RD_IN_USE 6
/*
* structure definitions
*/
#define SIZEOF_SONIC_TD 8
#define SONIC_TD_STATUS 0
#define SONIC_TD_CONFIG 1
#define SONIC_TD_PKTSIZE 2
#define SONIC_TD_FRAG_COUNT 3
#define SONIC_TD_FRAG_PTR_L 4
#define SONIC_TD_FRAG_PTR_H 5
#define SONIC_TD_FRAG_SIZE 6
#define SONIC_TD_LINK 7
typedef struct {
u32 rx_bufadr_l; /* receive buffer ptr */
u32 rx_bufadr_h;
#define SIZEOF_SONIC_CD 4
#define SONIC_CD_ENTRY_POINTER 0
#define SONIC_CD_CAP0 1
#define SONIC_CD_CAP1 2
#define SONIC_CD_CAP2 3
u32 rx_bufsize_l; /* no. of words in the receive buffer */
u32 rx_bufsize_h;
} sonic_rr_t;
/*
* Sonic receive descriptor. Receive descriptors are
* kept in a linked list of these structures.
*/
typedef struct {
u16 rx_status; /* status after reception of a packet */
SREGS_PAD(pad0);
u16 rx_pktlen; /* length of the packet incl. CRC */
SREGS_PAD(pad1);
/*
* Pointers to the location in the receive buffer area (RBA)
* where the packet resides. A packet is always received into
* a contiguous piece of memory.
*/
u16 rx_pktptr_l;
SREGS_PAD(pad2);
u16 rx_pktptr_h;
SREGS_PAD(pad3);
u16 rx_seqno; /* sequence no. */
SREGS_PAD(pad4);
u16 link; /* link to next RDD (end if EOL bit set) */
SREGS_PAD(pad5);
/*
* Owner of this descriptor, 0= driver, 1=sonic
*/
u16 in_use;
SREGS_PAD(pad6);
caddr_t rda_next; /* pointer to next RD */
} sonic_rd_t;
/*
* Describes a Transmit Descriptor
*/
typedef struct {
u16 tx_status; /* status after transmission of a packet */
SREGS_PAD(pad0);
u16 tx_config; /* transmit configuration for this packet */
SREGS_PAD(pad1);
u16 tx_pktsize; /* size of the packet to be transmitted */
SREGS_PAD(pad2);
u16 tx_frag_count; /* no. of fragments */
SREGS_PAD(pad3);
u16 tx_frag_ptr_l;
SREGS_PAD(pad4);
u16 tx_frag_ptr_h;
SREGS_PAD(pad5);
u16 tx_frag_size;
SREGS_PAD(pad6);
u16 link; /* ptr to next descriptor */
SREGS_PAD(pad7);
} sonic_td_t;
/*
* Describes an entry in the CAM Descriptor Area.
*/
typedef struct {
u16 cam_entry_pointer;
SREGS_PAD(pad0);
u16 cam_cap0;
SREGS_PAD(pad1);
u16 cam_cap1;
SREGS_PAD(pad2);
u16 cam_cap2;
SREGS_PAD(pad3);
} sonic_cd_t;
#define CAM_DESCRIPTORS 16
typedef struct {
sonic_cd_t cam_desc[CAM_DESCRIPTORS];
u16 cam_enable;
SREGS_PAD(pad);
} sonic_cda_t;
#endif /* endianness */
#define SIZEOF_SONIC_CDA ((CAM_DESCRIPTORS * SIZEOF_SONIC_CD) + 1)
#define SONIC_CDA_CAM_ENABLE (CAM_DESCRIPTORS * SIZEOF_SONIC_CD)
/*
* Some tunables for the buffer areas. Power of 2 is required
@ -426,44 +270,60 @@ typedef struct {
*
* MSch: use more buffer space for the slow m68k Macs!
*/
#ifdef CONFIG_MACSONIC
#define SONIC_NUM_RRS 32 /* number of receive resources */
#define SONIC_NUM_RDS SONIC_NUM_RRS /* number of receive descriptors */
#define SONIC_NUM_TDS 32 /* number of transmit descriptors */
#else
#define SONIC_NUM_RRS 16 /* number of receive resources */
#define SONIC_NUM_RDS SONIC_NUM_RRS /* number of receive descriptors */
#define SONIC_NUM_TDS 16 /* number of transmit descriptors */
#endif
#define SONIC_RBSIZE 1520 /* size of one resource buffer */
#define SONIC_NUM_RRS 16 /* number of receive resources */
#define SONIC_NUM_RDS SONIC_NUM_RRS /* number of receive descriptors */
#define SONIC_NUM_TDS 16 /* number of transmit descriptors */
#define SONIC_RDS_MASK (SONIC_NUM_RDS-1)
#define SONIC_TDS_MASK (SONIC_NUM_TDS-1)
#define SONIC_RDS_MASK (SONIC_NUM_RDS-1)
#define SONIC_TDS_MASK (SONIC_NUM_TDS-1)
#define SONIC_RBSIZE 1520 /* size of one resource buffer */
/* Again, measured in bus size units! */
#define SIZEOF_SONIC_DESC (SIZEOF_SONIC_CDA \
+ (SIZEOF_SONIC_TD * SONIC_NUM_TDS) \
+ (SIZEOF_SONIC_RD * SONIC_NUM_RDS) \
+ (SIZEOF_SONIC_RR * SONIC_NUM_RRS))
/* Information that need to be kept for each board. */
struct sonic_local {
sonic_cda_t cda; /* virtual CPU address of CDA */
sonic_td_t tda[SONIC_NUM_TDS]; /* transmit descriptor area */
sonic_rr_t rra[SONIC_NUM_RRS]; /* receive resource area */
sonic_rd_t rda[SONIC_NUM_RDS]; /* receive descriptor area */
struct sk_buff *tx_skb[SONIC_NUM_TDS]; /* skbuffs for packets to transmit */
unsigned int tx_laddr[SONIC_NUM_TDS]; /* logical DMA address fro skbuffs */
unsigned char *rba; /* start of receive buffer areas */
unsigned int cda_laddr; /* logical DMA address of CDA */
unsigned int tda_laddr; /* logical DMA address of TDA */
unsigned int rra_laddr; /* logical DMA address of RRA */
unsigned int rda_laddr; /* logical DMA address of RDA */
unsigned int rba_laddr; /* logical DMA address of RBA */
unsigned int cur_rra; /* current indexes to resource areas */
/* Bus size. 0 == 16 bits, 1 == 32 bits. */
int dma_bitmode;
/* Register offset within the longword (independent of endianness,
and varies from one type of Macintosh SONIC to another
(Aarrgh)) */
int reg_offset;
void *descriptors;
/* Crud. These areas have to be within the same 64K. Therefore
we allocate a desriptors page, and point these to places within it. */
void *cda; /* CAM descriptor area */
void *tda; /* Transmit descriptor area */
void *rra; /* Receive resource area */
void *rda; /* Receive descriptor area */
struct sk_buff* volatile rx_skb[SONIC_NUM_RRS]; /* packets to be received */
struct sk_buff* volatile tx_skb[SONIC_NUM_TDS]; /* packets to be transmitted */
unsigned int tx_len[SONIC_NUM_TDS]; /* lengths of tx DMA mappings */
/* Logical DMA addresses on MIPS, bus addresses on m68k
* (so "laddr" is a bit misleading) */
dma_addr_t descriptors_laddr;
u32 cda_laddr; /* logical DMA address of CDA */
u32 tda_laddr; /* logical DMA address of TDA */
u32 rra_laddr; /* logical DMA address of RRA */
u32 rda_laddr; /* logical DMA address of RDA */
dma_addr_t rx_laddr[SONIC_NUM_RRS]; /* logical DMA addresses of rx skbuffs */
dma_addr_t tx_laddr[SONIC_NUM_TDS]; /* logical DMA addresses of tx skbuffs */
unsigned int rra_end;
unsigned int cur_rwp;
unsigned int cur_rx;
unsigned int cur_tx;
unsigned int dirty_tx; /* last unacked transmit packet */
char tx_full;
unsigned int cur_tx; /* first unacked transmit packet */
unsigned int eol_rx;
unsigned int eol_tx; /* last unacked transmit packet */
unsigned int next_tx; /* next free TD */
struct device *device; /* generic device */
struct net_device_stats stats;
};
#define TX_TIMEOUT 6
#define TX_TIMEOUT (3 * HZ)
/* Index to functions, as function prototypes. */
@ -477,6 +337,114 @@ static void sonic_multicast_list(struct net_device *dev);
static int sonic_init(struct net_device *dev);
static void sonic_tx_timeout(struct net_device *dev);
/* Internal inlines for reading/writing DMA buffers. Note that bus
size and endianness matter here, whereas they don't for registers,
as far as we can tell. */
/* OpenBSD calls this "SWO". I'd like to think that sonic_buf_put()
is a much better name. */
static inline void sonic_buf_put(void* base, int bitmode,
int offset, __u16 val)
{
if (bitmode)
#ifdef __BIG_ENDIAN
((__u16 *) base + (offset*2))[1] = val;
#else
((__u16 *) base + (offset*2))[0] = val;
#endif
else
((__u16 *) base)[offset] = val;
}
static inline __u16 sonic_buf_get(void* base, int bitmode,
int offset)
{
if (bitmode)
#ifdef __BIG_ENDIAN
return ((volatile __u16 *) base + (offset*2))[1];
#else
return ((volatile __u16 *) base + (offset*2))[0];
#endif
else
return ((volatile __u16 *) base)[offset];
}
/* Inlines that you should actually use for reading/writing DMA buffers */
static inline void sonic_cda_put(struct net_device* dev, int entry,
int offset, __u16 val)
{
struct sonic_local* lp = (struct sonic_local *) dev->priv;
sonic_buf_put(lp->cda, lp->dma_bitmode,
(entry * SIZEOF_SONIC_CD) + offset, val);
}
static inline __u16 sonic_cda_get(struct net_device* dev, int entry,
int offset)
{
struct sonic_local* lp = (struct sonic_local *) dev->priv;
return sonic_buf_get(lp->cda, lp->dma_bitmode,
(entry * SIZEOF_SONIC_CD) + offset);
}
static inline void sonic_set_cam_enable(struct net_device* dev, __u16 val)
{
struct sonic_local* lp = (struct sonic_local *) dev->priv;
sonic_buf_put(lp->cda, lp->dma_bitmode, SONIC_CDA_CAM_ENABLE, val);
}
static inline __u16 sonic_get_cam_enable(struct net_device* dev)
{
struct sonic_local* lp = (struct sonic_local *) dev->priv;
return sonic_buf_get(lp->cda, lp->dma_bitmode, SONIC_CDA_CAM_ENABLE);
}
static inline void sonic_tda_put(struct net_device* dev, int entry,
int offset, __u16 val)
{
struct sonic_local* lp = (struct sonic_local *) dev->priv;
sonic_buf_put(lp->tda, lp->dma_bitmode,
(entry * SIZEOF_SONIC_TD) + offset, val);
}
static inline __u16 sonic_tda_get(struct net_device* dev, int entry,
int offset)
{
struct sonic_local* lp = (struct sonic_local *) dev->priv;
return sonic_buf_get(lp->tda, lp->dma_bitmode,
(entry * SIZEOF_SONIC_TD) + offset);
}
static inline void sonic_rda_put(struct net_device* dev, int entry,
int offset, __u16 val)
{
struct sonic_local* lp = (struct sonic_local *) dev->priv;
sonic_buf_put(lp->rda, lp->dma_bitmode,
(entry * SIZEOF_SONIC_RD) + offset, val);
}
static inline __u16 sonic_rda_get(struct net_device* dev, int entry,
int offset)
{
struct sonic_local* lp = (struct sonic_local *) dev->priv;
return sonic_buf_get(lp->rda, lp->dma_bitmode,
(entry * SIZEOF_SONIC_RD) + offset);
}
static inline void sonic_rra_put(struct net_device* dev, int entry,
int offset, __u16 val)
{
struct sonic_local* lp = (struct sonic_local *) dev->priv;
sonic_buf_put(lp->rra, lp->dma_bitmode,
(entry * SIZEOF_SONIC_RR) + offset, val);
}
static inline __u16 sonic_rra_get(struct net_device* dev, int entry,
int offset)
{
struct sonic_local* lp = (struct sonic_local *) dev->priv;
return sonic_buf_get(lp->rra, lp->dma_bitmode,
(entry * SIZEOF_SONIC_RR) + offset);
}
static const char *version =
"sonic.c:v0.92 20.9.98 tsbogend@alpha.franken.de\n";