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mips: declance: Driver model for the PMAD-A
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This is a set of changes that converts the PMAD-A support to the driver model.

Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Jeff Garzik <jeff@garzik.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
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Maciej W. Rozycki authored and Jeff Garzik committed Feb 7, 2007
1 parent d9a9720 commit 257b346
Showing 1 changed file with 117 additions and 47 deletions.
164 changes: 117 additions & 47 deletions drivers/net/declance.c
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Original file line number Diff line number Diff line change
Expand Up @@ -5,7 +5,7 @@
*
* adopted from sunlance.c by Richard van den Berg
*
* Copyright (C) 2002, 2003, 2005 Maciej W. Rozycki
* Copyright (C) 2002, 2003, 2005, 2006 Maciej W. Rozycki
*
* additional sources:
* - PMAD-AA TURBOchannel Ethernet Module Functional Specification,
Expand Down Expand Up @@ -44,6 +44,8 @@
* v0.010: Fixes for the PMAD mapping of the LANCE buffer and for the
* PMAX requirement to only use halfword accesses to the
* buffer. macro
*
* v0.011: Converted the PMAD to the driver model. macro
*/

#include <linux/crc32.h>
Expand All @@ -58,6 +60,7 @@
#include <linux/spinlock.h>
#include <linux/stddef.h>
#include <linux/string.h>
#include <linux/tc.h>
#include <linux/types.h>

#include <asm/addrspace.h>
Expand All @@ -69,15 +72,16 @@
#include <asm/dec/kn01.h>
#include <asm/dec/machtype.h>
#include <asm/dec/system.h>
#include <asm/dec/tc.h>

static char version[] __devinitdata =
"declance.c: v0.010 by Linux MIPS DECstation task force\n";
"declance.c: v0.011 by Linux MIPS DECstation task force\n";

MODULE_AUTHOR("Linux MIPS DECstation task force");
MODULE_DESCRIPTION("DEC LANCE (DECstation onboard, PMAD-xx) driver");
MODULE_LICENSE("GPL");

#define __unused __attribute__ ((unused))

/*
* card types
*/
Expand Down Expand Up @@ -246,7 +250,6 @@ struct lance_init_block {
struct lance_private {
struct net_device *next;
int type;
int slot;
int dma_irq;
volatile struct lance_regs *ll;

Expand Down Expand Up @@ -288,6 +291,7 @@ struct lance_regs {

int dec_lance_debug = 2;

static struct tc_driver dec_lance_tc_driver;
static struct net_device *root_lance_dev;

static inline void writereg(volatile unsigned short *regptr, short value)
Expand Down Expand Up @@ -1023,29 +1027,34 @@ static void lance_set_multicast_retry(unsigned long _opaque)
lance_set_multicast(dev);
}

static int __init dec_lance_init(const int type, const int slot)
static int __init dec_lance_probe(struct device *bdev, const int type)
{
static unsigned version_printed;
static const char fmt[] = "declance%d";
char name[10];
struct net_device *dev;
struct lance_private *lp;
volatile struct lance_regs *ll;
resource_size_t start = 0, len = 0;
int i, ret;
unsigned long esar_base;
unsigned char *esar;

if (dec_lance_debug && version_printed++ == 0)
printk(version);

i = 0;
dev = root_lance_dev;
while (dev) {
i++;
lp = (struct lance_private *)dev->priv;
dev = lp->next;
if (bdev)
snprintf(name, sizeof(name), "%s", bdev->bus_id);
else {
i = 0;
dev = root_lance_dev;
while (dev) {
i++;
lp = (struct lance_private *)dev->priv;
dev = lp->next;
}
snprintf(name, sizeof(name), fmt, i);
}
snprintf(name, sizeof(name), fmt, i);

dev = alloc_etherdev(sizeof(struct lance_private));
if (!dev) {
Expand All @@ -1063,7 +1072,6 @@ static int __init dec_lance_init(const int type, const int slot)
spin_lock_init(&lp->lock);

lp->type = type;
lp->slot = slot;
switch (type) {
case ASIC_LANCE:
dev->base_addr = CKSEG1ADDR(dec_kn_slot_base + IOASIC_LANCE);
Expand Down Expand Up @@ -1110,12 +1118,22 @@ static int __init dec_lance_init(const int type, const int slot)
break;
#ifdef CONFIG_TC
case PMAD_LANCE:
claim_tc_card(slot);
dev_set_drvdata(bdev, dev);

start = to_tc_dev(bdev)->resource.start;
len = to_tc_dev(bdev)->resource.end - start + 1;
if (!request_mem_region(start, len, bdev->bus_id)) {
printk(KERN_ERR
"%s: Unable to reserve MMIO resource\n",
bdev->bus_id);
ret = -EBUSY;
goto err_out_dev;
}

dev->mem_start = CKSEG1ADDR(get_tc_base_addr(slot));
dev->mem_start = CKSEG1ADDR(start);
dev->mem_end = dev->mem_start + 0x100000;
dev->base_addr = dev->mem_start + 0x100000;
dev->irq = get_tc_irq_nr(slot);
dev->irq = to_tc_dev(bdev)->interrupt;
esar_base = dev->mem_start + 0x1c0002;
lp->dma_irq = -1;

Expand Down Expand Up @@ -1174,7 +1192,7 @@ static int __init dec_lance_init(const int type, const int slot)
printk(KERN_ERR "%s: declance_init called with unknown type\n",
name);
ret = -ENODEV;
goto err_out_free_dev;
goto err_out_dev;
}

ll = (struct lance_regs *) dev->base_addr;
Expand All @@ -1188,7 +1206,7 @@ static int __init dec_lance_init(const int type, const int slot)
"%s: Ethernet station address prom not found!\n",
name);
ret = -ENODEV;
goto err_out_free_dev;
goto err_out_resource;
}
/* Check the prom contents */
for (i = 0; i < 8; i++) {
Expand All @@ -1198,7 +1216,7 @@ static int __init dec_lance_init(const int type, const int slot)
printk(KERN_ERR "%s: Something is wrong with the "
"ethernet station address prom!\n", name);
ret = -ENODEV;
goto err_out_free_dev;
goto err_out_resource;
}
}

Expand Down Expand Up @@ -1255,70 +1273,122 @@ static int __init dec_lance_init(const int type, const int slot)
if (ret) {
printk(KERN_ERR
"%s: Unable to register netdev, aborting.\n", name);
goto err_out_free_dev;
goto err_out_resource;
}

lp->next = root_lance_dev;
root_lance_dev = dev;
if (!bdev) {
lp->next = root_lance_dev;
root_lance_dev = dev;
}

printk("%s: registered as %s.\n", name, dev->name);
return 0;

err_out_free_dev:
err_out_resource:
if (bdev)
release_mem_region(start, len);

err_out_dev:
free_netdev(dev);

err_out:
return ret;
}

static void __exit dec_lance_remove(struct device *bdev)
{
struct net_device *dev = dev_get_drvdata(bdev);
resource_size_t start, len;

unregister_netdev(dev);
start = to_tc_dev(bdev)->resource.start;
len = to_tc_dev(bdev)->resource.end - start + 1;
release_mem_region(start, len);
free_netdev(dev);
}

/* Find all the lance cards on the system and initialize them */
static int __init dec_lance_probe(void)
static int __init dec_lance_platform_probe(void)
{
int count = 0;

/* Scan slots for PMAD-AA cards first. */
#ifdef CONFIG_TC
if (TURBOCHANNEL) {
int slot;

while ((slot = search_tc_card("PMAD-AA")) >= 0) {
if (dec_lance_init(PMAD_LANCE, slot) < 0)
break;
count++;
}
}
#endif

/* Then handle onboard devices. */
if (dec_interrupt[DEC_IRQ_LANCE] >= 0) {
if (dec_interrupt[DEC_IRQ_LANCE_MERR] >= 0) {
if (dec_lance_init(ASIC_LANCE, -1) >= 0)
if (dec_lance_probe(NULL, ASIC_LANCE) >= 0)
count++;
} else if (!TURBOCHANNEL) {
if (dec_lance_init(PMAX_LANCE, -1) >= 0)
if (dec_lance_probe(NULL, PMAX_LANCE) >= 0)
count++;
}
}

return (count > 0) ? 0 : -ENODEV;
}

static void __exit dec_lance_cleanup(void)
static void __exit dec_lance_platform_remove(void)
{
while (root_lance_dev) {
struct net_device *dev = root_lance_dev;
struct lance_private *lp = netdev_priv(dev);

unregister_netdev(dev);
#ifdef CONFIG_TC
if (lp->slot >= 0)
release_tc_card(lp->slot);
#endif
root_lance_dev = lp->next;
free_netdev(dev);
}
}

module_init(dec_lance_probe);
module_exit(dec_lance_cleanup);
#ifdef CONFIG_TC
static int __init dec_lance_tc_probe(struct device *dev);
static int __exit dec_lance_tc_remove(struct device *dev);

static const struct tc_device_id dec_lance_tc_table[] = {
{ "DEC ", "PMAD-AA " },
{ }
};
MODULE_DEVICE_TABLE(tc, dec_lance_tc_table);

static struct tc_driver dec_lance_tc_driver = {
.id_table = dec_lance_tc_table,
.driver = {
.name = "declance",
.bus = &tc_bus_type,
.probe = dec_lance_tc_probe,
.remove = __exit_p(dec_lance_tc_remove),
},
};

static int __init dec_lance_tc_probe(struct device *dev)
{
int status = dec_lance_probe(dev, PMAD_LANCE);
if (!status)
get_device(dev);
return status;
}

static int __exit dec_lance_tc_remove(struct device *dev)
{
put_device(dev);
dec_lance_remove(dev);
return 0;
}
#endif

static int __init dec_lance_init(void)
{
int status;

status = tc_register_driver(&dec_lance_tc_driver);
if (!status)
dec_lance_platform_probe();
return status;
}

static void __exit dec_lance_exit(void)
{
dec_lance_platform_remove();
tc_unregister_driver(&dec_lance_tc_driver);
}


module_init(dec_lance_init);
module_exit(dec_lance_exit);

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