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path: root/drivers/net/dm9000.c
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Diffstat (limited to 'drivers/net/dm9000.c')
-rw-r--r--drivers/net/dm9000.c654
1 files changed, 425 insertions, 229 deletions
diff --git a/drivers/net/dm9000.c b/drivers/net/dm9000.c
index 6a20a5491a9..1fe305ca2cf 100644
--- a/drivers/net/dm9000.c
+++ b/drivers/net/dm9000.c
@@ -1,7 +1,5 @@
/*
- * dm9000.c: Version 1.2 03/18/2003
- *
- * A Davicom DM9000 ISA NIC fast Ethernet driver for Linux.
+ * Davicom DM9000 Fast Ethernet driver for Linux.
* Copyright (C) 1997 Sten Wang
*
* This program is free software; you can redistribute it and/or
@@ -14,44 +12,11 @@
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
- * (C)Copyright 1997-1998 DAVICOM Semiconductor,Inc. All Rights Reserved.
- *
- * V0.11 06/20/2001 REG_0A bit3=1, default enable BP with DA match
- * 06/22/2001 Support DM9801 progrmming
- * E3: R25 = ((R24 + NF) & 0x00ff) | 0xf000
- * E4: R25 = ((R24 + NF) & 0x00ff) | 0xc200
- * R17 = (R17 & 0xfff0) | NF + 3
- * E5: R25 = ((R24 + NF - 3) & 0x00ff) | 0xc200
- * R17 = (R17 & 0xfff0) | NF
- *
- * v1.00 modify by simon 2001.9.5
- * change for kernel 2.4.x
- *
- * v1.1 11/09/2001 fix force mode bug
- *
- * v1.2 03/18/2003 Weilun Huang <weilun_huang@davicom.com.tw>:
- * Fixed phy reset.
- * Added tx/rx 32 bit mode.
- * Cleaned up for kernel merge.
- *
- * 03/03/2004 Sascha Hauer <s.hauer@pengutronix.de>
- * Port to 2.6 kernel
- *
- * 24-Sep-2004 Ben Dooks <ben@simtec.co.uk>
- * Cleanup of code to remove ifdefs
- * Allowed platform device data to influence access width
- * Reformatting areas of code
- *
- * 17-Mar-2005 Sascha Hauer <s.hauer@pengutronix.de>
- * * removed 2.4 style module parameters
- * * removed removed unused stat counter and fixed
- * net_device_stats
- * * introduced tx_timeout function
- * * reworked locking
+ * (C) Copyright 1997-1998 DAVICOM Semiconductor,Inc. All Rights Reserved.
*
- * 01-Jul-2005 Ben Dooks <ben@simtec.co.uk>
- * * fixed spinlock call without pointer
- * * ensure spinlock is initialised
+ * Additional updates, Copyright:
+ * Ben Dooks <ben@simtec.co.uk>
+ * Sascha Hauer <s.hauer@pengutronix.de>
*/
#include <linux/module.h>
@@ -63,6 +28,7 @@
#include <linux/spinlock.h>
#include <linux/crc32.h>
#include <linux/mii.h>
+#include <linux/ethtool.h>
#include <linux/dm9000.h>
#include <linux/delay.h>
#include <linux/platform_device.h>
@@ -80,30 +46,7 @@
#define CARDNAME "dm9000"
#define PFX CARDNAME ": "
-
-#define DM9000_TIMER_WUT jiffies+(HZ*2) /* timer wakeup time : 2 second */
-
-#define DM9000_DEBUG 0
-
-#if DM9000_DEBUG > 2
-#define PRINTK3(args...) printk(CARDNAME ": " args)
-#else
-#define PRINTK3(args...) do { } while(0)
-#endif
-
-#if DM9000_DEBUG > 1
-#define PRINTK2(args...) printk(CARDNAME ": " args)
-#else
-#define PRINTK2(args...) do { } while(0)
-#endif
-
-#if DM9000_DEBUG > 0
-#define PRINTK1(args...) printk(CARDNAME ": " args)
-#define PRINTK(args...) printk(CARDNAME ": " args)
-#else
-#define PRINTK1(args...) do { } while(0)
-#define PRINTK(args...) printk(KERN_DEBUG args)
-#endif
+#define DRV_VERSION "1.30"
#ifdef CONFIG_BLACKFIN
#define readsb insb
@@ -112,9 +55,9 @@
#define writesb outsb
#define writesw outsw
#define writesl outsl
-#define DM9000_IRQ_FLAGS (IRQF_SHARED | IRQF_TRIGGER_HIGH)
+#define DEFAULT_TRIGGER IRQF_TRIGGER_HIGH
#else
-#define DM9000_IRQ_FLAGS (IRQF_SHARED | IRQT_RISING)
+#define DEFAULT_TRIGGER (0)
#endif
/*
@@ -124,6 +67,24 @@ static int watchdog = 5000;
module_param(watchdog, int, 0400);
MODULE_PARM_DESC(watchdog, "transmit timeout in milliseconds");
+/* DM9000 register address locking.
+ *
+ * The DM9000 uses an address register to control where data written
+ * to the data register goes. This means that the address register
+ * must be preserved over interrupts or similar calls.
+ *
+ * During interrupt and other critical calls, a spinlock is used to
+ * protect the system, but the calls themselves save the address
+ * in the address register in case they are interrupting another
+ * access to the device.
+ *
+ * For general accesses a lock is provided so that calls which are
+ * allowed to sleep are serialised so that the address register does
+ * not need to be saved. This lock also serves to serialise access
+ * to the EEPROM and PHY access registers which are shared between
+ * these two devices.
+ */
+
/* Structure/enum declaration ------------------------------- */
typedef struct board_info {
@@ -137,33 +98,52 @@ typedef struct board_info {
u16 dbug_cnt;
u8 io_mode; /* 0:word, 2:byte */
u8 phy_addr;
+ unsigned int flags;
+ unsigned int in_suspend :1;
+
+ int debug_level;
void (*inblk)(void __iomem *port, void *data, int length);
void (*outblk)(void __iomem *port, void *data, int length);
void (*dumpblk)(void __iomem *port, int length);
+ struct device *dev; /* parent device */
+
struct resource *addr_res; /* resources found */
struct resource *data_res;
struct resource *addr_req; /* resources requested */
struct resource *data_req;
struct resource *irq_res;
- struct timer_list timer;
- unsigned char srom[128];
+ struct mutex addr_lock; /* phy and eeprom access lock */
+
spinlock_t lock;
struct mii_if_info mii;
u32 msg_enable;
} board_info_t;
+/* debug code */
+
+#define dm9000_dbg(db, lev, msg...) do { \
+ if ((lev) < CONFIG_DM9000_DEBUGLEVEL && \
+ (lev) < db->debug_level) { \
+ dev_dbg(db->dev, msg); \
+ } \
+} while (0)
+
+static inline board_info_t *to_dm9000_board(struct net_device *dev)
+{
+ return dev->priv;
+}
+
/* function declaration ------------------------------------- */
static int dm9000_probe(struct platform_device *);
static int dm9000_open(struct net_device *);
static int dm9000_start_xmit(struct sk_buff *, struct net_device *);
static int dm9000_stop(struct net_device *);
+static int dm9000_ioctl(struct net_device *dev, struct ifreq *req, int cmd);
-
-static void dm9000_timer(unsigned long);
static void dm9000_init_dm9000(struct net_device *);
static irqreturn_t dm9000_interrupt(int, void *);
@@ -171,20 +151,19 @@ static irqreturn_t dm9000_interrupt(int, void *);
static int dm9000_phy_read(struct net_device *dev, int phyaddr_unsused, int reg);
static void dm9000_phy_write(struct net_device *dev, int phyaddr_unused, int reg,
int value);
-static u16 read_srom_word(board_info_t *, int);
+
+static void dm9000_read_eeprom(board_info_t *, int addr, u8 *to);
+static void dm9000_write_eeprom(board_info_t *, int addr, u8 *dp);
static void dm9000_rx(struct net_device *);
static void dm9000_hash_table(struct net_device *);
-//#define DM9000_PROGRAM_EEPROM
-#ifdef DM9000_PROGRAM_EEPROM
-static void program_eeprom(board_info_t * db);
-#endif
/* DM9000 network board routine ---------------------------- */
static void
dm9000_reset(board_info_t * db)
{
- PRINTK1("dm9000x: resetting\n");
+ dev_dbg(db->dev, "resetting device\n");
+
/* RESET device */
writeb(DM9000_NCR, db->io_addr);
udelay(200);
@@ -300,14 +279,10 @@ static void dm9000_set_io(struct board_info *db, int byte_width)
db->inblk = dm9000_inblk_8bit;
break;
- case 2:
- db->dumpblk = dm9000_dumpblk_16bit;
- db->outblk = dm9000_outblk_16bit;
- db->inblk = dm9000_inblk_16bit;
- break;
case 3:
- printk(KERN_ERR PFX ": 3 byte IO, falling back to 16bit\n");
+ dev_dbg(db->dev, ": 3 byte IO, falling back to 16bit\n");
+ case 2:
db->dumpblk = dm9000_dumpblk_16bit;
db->outblk = dm9000_outblk_16bit;
db->inblk = dm9000_inblk_16bit;
@@ -358,6 +333,139 @@ static void dm9000_poll_controller(struct net_device *dev)
}
#endif
+static int dm9000_ioctl(struct net_device *dev, struct ifreq *req, int cmd)
+{
+ board_info_t *dm = to_dm9000_board(dev);
+
+ if (!netif_running(dev))
+ return -EINVAL;
+
+ return generic_mii_ioctl(&dm->mii, if_mii(req), cmd, NULL);
+}
+
+/* ethtool ops */
+
+static void dm9000_get_drvinfo(struct net_device *dev,
+ struct ethtool_drvinfo *info)
+{
+ board_info_t *dm = to_dm9000_board(dev);
+
+ strcpy(info->driver, CARDNAME);
+ strcpy(info->version, DRV_VERSION);
+ strcpy(info->bus_info, to_platform_device(dm->dev)->name);
+}
+
+static u32 dm9000_get_msglevel(struct net_device *dev)
+{
+ board_info_t *dm = to_dm9000_board(dev);
+
+ return dm->msg_enable;
+}
+
+static void dm9000_set_msglevel(struct net_device *dev, u32 value)
+{
+ board_info_t *dm = to_dm9000_board(dev);
+
+ dm->msg_enable = value;
+}
+
+static int dm9000_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
+{
+ board_info_t *dm = to_dm9000_board(dev);
+
+ mii_ethtool_gset(&dm->mii, cmd);
+ return 0;
+}
+
+static int dm9000_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
+{
+ board_info_t *dm = to_dm9000_board(dev);
+
+ return mii_ethtool_sset(&dm->mii, cmd);
+}
+
+static int dm9000_nway_reset(struct net_device *dev)
+{
+ board_info_t *dm = to_dm9000_board(dev);
+ return mii_nway_restart(&dm->mii);
+}
+
+static u32 dm9000_get_link(struct net_device *dev)
+{
+ board_info_t *dm = to_dm9000_board(dev);
+ return mii_link_ok(&dm->mii);
+}
+
+#define DM_EEPROM_MAGIC (0x444D394B)
+
+static int dm9000_get_eeprom_len(struct net_device *dev)
+{
+ return 128;
+}
+
+static int dm9000_get_eeprom(struct net_device *dev,
+ struct ethtool_eeprom *ee, u8 *data)
+{
+ board_info_t *dm = to_dm9000_board(dev);
+ int offset = ee->offset;
+ int len = ee->len;
+ int i;
+
+ /* EEPROM access is aligned to two bytes */
+
+ if ((len & 1) != 0 || (offset & 1) != 0)
+ return -EINVAL;
+
+ if (dm->flags & DM9000_PLATF_NO_EEPROM)
+ return -ENOENT;
+
+ ee->magic = DM_EEPROM_MAGIC;
+
+ for (i = 0; i < len; i += 2)
+ dm9000_read_eeprom(dm, (offset + i) / 2, data + i);
+
+ return 0;
+}
+
+static int dm9000_set_eeprom(struct net_device *dev,
+ struct ethtool_eeprom *ee, u8 *data)
+{
+ board_info_t *dm = to_dm9000_board(dev);
+ int offset = ee->offset;
+ int len = ee->len;
+ int i;
+
+ /* EEPROM access is aligned to two bytes */
+
+ if ((len & 1) != 0 || (offset & 1) != 0)
+ return -EINVAL;
+
+ if (dm->flags & DM9000_PLATF_NO_EEPROM)
+ return -ENOENT;
+
+ if (ee->magic != DM_EEPROM_MAGIC)
+ return -EINVAL;
+
+ for (i = 0; i < len; i += 2)
+ dm9000_write_eeprom(dm, (offset + i) / 2, data + i);
+
+ return 0;
+}
+
+static const struct ethtool_ops dm9000_ethtool_ops = {
+ .get_drvinfo = dm9000_get_drvinfo,
+ .get_settings = dm9000_get_settings,
+ .set_settings = dm9000_set_settings,
+ .get_msglevel = dm9000_get_msglevel,
+ .set_msglevel = dm9000_set_msglevel,
+ .nway_reset = dm9000_nway_reset,
+ .get_link = dm9000_get_link,
+ .get_eeprom_len = dm9000_get_eeprom_len,
+ .get_eeprom = dm9000_get_eeprom,
+ .set_eeprom = dm9000_set_eeprom,
+};
+
+
/* dm9000_release_board
*
* release a board, and any mapped resources
@@ -401,6 +509,7 @@ dm9000_probe(struct platform_device *pdev)
struct dm9000_plat_data *pdata = pdev->dev.platform_data;
struct board_info *db; /* Point a board information structure */
struct net_device *ndev;
+ const unsigned char *mac_src;
unsigned long base;
int ret = 0;
int iosize;
@@ -410,19 +519,22 @@ dm9000_probe(struct platform_device *pdev)
/* Init network device */
ndev = alloc_etherdev(sizeof (struct board_info));
if (!ndev) {
- printk("%s: could not allocate device.\n", CARDNAME);
+ dev_err(&pdev->dev, "could not allocate device.\n");
return -ENOMEM;
}
SET_NETDEV_DEV(ndev, &pdev->dev);
- PRINTK2("dm9000_probe()");
+ dev_dbg(&pdev->dev, "dm9000_probe()");
/* setup board info structure */
db = (struct board_info *) ndev->priv;
memset(db, 0, sizeof (*db));
+ db->dev = &pdev->dev;
+
spin_lock_init(&db->lock);
+ mutex_init(&db->addr_lock);
if (pdev->num_resources < 2) {
ret = -ENODEV;
@@ -450,7 +562,7 @@ dm9000_probe(struct platform_device *pdev)
if (db->addr_res == NULL || db->data_res == NULL ||
db->irq_res == NULL) {
- printk(KERN_ERR PFX "insufficient resources\n");
+ dev_err(db->dev, "insufficient resources\n");
ret = -ENOENT;
goto out;
}
@@ -460,7 +572,7 @@ dm9000_probe(struct platform_device *pdev)
pdev->name);
if (db->addr_req == NULL) {
- printk(KERN_ERR PFX "cannot claim address reg area\n");
+ dev_err(db->dev, "cannot claim address reg area\n");
ret = -EIO;
goto out;
}
@@ -468,7 +580,7 @@ dm9000_probe(struct platform_device *pdev)
db->io_addr = ioremap(db->addr_res->start, i);
if (db->io_addr == NULL) {
- printk(KERN_ERR "failed to ioremap address reg\n");
+ dev_err(db->dev, "failed to ioremap address reg\n");
ret = -EINVAL;
goto out;
}
@@ -478,7 +590,7 @@ dm9000_probe(struct platform_device *pdev)
pdev->name);
if (db->data_req == NULL) {
- printk(KERN_ERR PFX "cannot claim data reg area\n");
+ dev_err(db->dev, "cannot claim data reg area\n");
ret = -EIO;
goto out;
}
@@ -486,7 +598,7 @@ dm9000_probe(struct platform_device *pdev)
db->io_data = ioremap(db->data_res->start, iosize);
if (db->io_data == NULL) {
- printk(KERN_ERR "failed to ioremap data reg\n");
+ dev_err(db->dev,"failed to ioremap data reg\n");
ret = -EINVAL;
goto out;
}
@@ -525,12 +637,14 @@ dm9000_probe(struct platform_device *pdev)
if (pdata->dumpblk != NULL)
db->dumpblk = pdata->dumpblk;
+
+ db->flags = pdata->flags;
}
dm9000_reset(db);
/* try two times, DM9000 sometimes gets the first read wrong */
- for (i = 0; i < 2; i++) {
+ for (i = 0; i < 8; i++) {
id_val = ior(db, DM9000_VIDL);
id_val |= (u32)ior(db, DM9000_VIDH) << 8;
id_val |= (u32)ior(db, DM9000_PIDL) << 16;
@@ -538,11 +652,11 @@ dm9000_probe(struct platform_device *pdev)
if (id_val == DM9000_ID)
break;
- printk("%s: read wrong id 0x%08x\n", CARDNAME, id_val);
+ dev_err(db->dev, "read wrong id 0x%08x\n", id_val);
}
if (id_val != DM9000_ID) {
- printk("%s: wrong id: 0x%08x\n", CARDNAME, id_val);
+ dev_err(db->dev, "wrong id: 0x%08x\n", id_val);
ret = -ENODEV;
goto out;
}
@@ -558,13 +672,13 @@ dm9000_probe(struct platform_device *pdev)
ndev->watchdog_timeo = msecs_to_jiffies(watchdog);
ndev->stop = &dm9000_stop;
ndev->set_multicast_list = &dm9000_hash_table;
+ ndev->ethtool_ops = &dm9000_ethtool_ops;
+ ndev->do_ioctl = &dm9000_ioctl;
+
#ifdef CONFIG_NET_POLL_CONTROLLER
ndev->poll_controller = &dm9000_poll_controller;
#endif
-#ifdef DM9000_PROGRAM_EEPROM
- program_eeprom(db);
-#endif
db->msg_enable = NETIF_MSG_LINK;
db->mii.phy_id_mask = 0x1f;
db->mii.reg_num_mask = 0x1f;
@@ -574,38 +688,37 @@ dm9000_probe(struct platform_device *pdev)
db->mii.mdio_read = dm9000_phy_read;
db->mii.mdio_write = dm9000_phy_write;
- /* Read SROM content */
- for (i = 0; i < 64; i++)
- ((u16 *) db->srom)[i] = read_srom_word(db, i);
+ mac_src = "eeprom";
- /* Set Node Address */
- for (i = 0; i < 6; i++)
- ndev->dev_addr[i] = db->srom[i];
+ /* try reading the node address from the attached EEPROM */
+ for (i = 0; i < 6; i += 2)
+ dm9000_read_eeprom(db, i / 2, ndev->dev_addr+i);
if (!is_valid_ether_addr(ndev->dev_addr)) {
/* try reading from mac */
-
+
+ mac_src = "chip";
for (i = 0; i < 6; i++)
ndev->dev_addr[i] = ior(db, i+DM9000_PAR);
}
if (!is_valid_ether_addr(ndev->dev_addr))
- printk("%s: Invalid ethernet MAC address. Please "
- "set using ifconfig\n", ndev->name);
+ dev_warn(db->dev, "%s: Invalid ethernet MAC address. Please "
+ "set using ifconfig\n", ndev->name);
platform_set_drvdata(pdev, ndev);
ret = register_netdev(ndev);
if (ret == 0) {
DECLARE_MAC_BUF(mac);
- printk("%s: dm9000 at %p,%p IRQ %d MAC: %s\n",
+ printk("%s: dm9000 at %p,%p IRQ %d MAC: %s (%s)\n",
ndev->name, db->io_addr, db->io_data, ndev->irq,
- print_mac(mac, ndev->dev_addr));
+ print_mac(mac, ndev->dev_addr), mac_src);
}
return 0;
out:
- printk("%s: not found (%d).\n", CARDNAME, ret);
+ dev_err(db->dev, "not found (%d).\n", ret);
dm9000_release_board(pdev, db);
free_netdev(ndev);
@@ -621,10 +734,22 @@ static int
dm9000_open(struct net_device *dev)
{
board_info_t *db = (board_info_t *) dev->priv;
+ unsigned long irqflags = db->irq_res->flags & IRQF_TRIGGER_MASK;
- PRINTK2("entering dm9000_open\n");
+ if (netif_msg_ifup(db))
+ dev_dbg(db->dev, "enabling %s\n", dev->name);
- if (request_irq(dev->irq, &dm9000_interrupt, DM9000_IRQ_FLAGS, dev->name, dev))
+ /* If there is no IRQ type specified, default to something that
+ * may work, and tell the user that this is a problem */
+
+ if (irqflags == IRQF_TRIGGER_NONE) {
+ dev_warn(db->dev, "WARNING: no IRQ resource flags set.\n");
+ irqflags = DEFAULT_TRIGGER;
+ }
+
+ irqflags |= IRQF_SHARED;
+
+ if (request_irq(dev->irq, &dm9000_interrupt, irqflags, dev->name, dev))
return -EAGAIN;
/* Initialize DM9000 board */
@@ -634,13 +759,6 @@ dm9000_open(struct net_device *dev)
/* Init driver variable */
db->dbug_cnt = 0;
- /* set and active a timer process */
- init_timer(&db->timer);
- db->timer.expires = DM9000_TIMER_WUT;
- db->timer.data = (unsigned long) dev;
- db->timer.function = &dm9000_timer;
- add_timer(&db->timer);
-
mii_check_media(&db->mii, netif_msg_link(db), 1);
netif_start_queue(dev);
@@ -655,7 +773,7 @@ dm9000_init_dm9000(struct net_device *dev)
{
board_info_t *db = (board_info_t *) dev->priv;
- PRINTK1("entering %s\n",__FUNCTION__);
+ dm9000_dbg(db, 1, "entering %s\n", __func__);
/* I/O mode */
db->io_mode = ior(db, DM9000_ISR) >> 6; /* ISR bit7:6 keeps I/O mode */
@@ -665,6 +783,9 @@ dm9000_init_dm9000(struct net_device *dev)
iow(db, DM9000_GPCR, GPCR_GEP_CNTL); /* Let GPIO0 output */
iow(db, DM9000_GPR, 0); /* Enable PHY */
+ if (db->flags & DM9000_PLATF_EXT_PHY)
+ iow(db, DM9000_NCR, NCR_EXT_PHY);
+
/* Program operating register */
iow(db, DM9000_TCR, 0); /* TX Polling clear */
iow(db, DM9000_BPTR, 0x3f); /* Less 3Kb, 200us */
@@ -698,7 +819,7 @@ dm9000_start_xmit(struct sk_buff *skb, struct net_device *dev)
unsigned long flags;
board_info_t *db = (board_info_t *) dev->priv;
- PRINTK3("dm9000_start_xmit\n");
+ dm9000_dbg(db, 3, "%s:\n", __func__);
if (db->tx_pkt_cnt > 1)
return 1;
@@ -715,8 +836,8 @@ dm9000_start_xmit(struct sk_buff *skb, struct net_device *dev)
/* TX control: First packet immediately send, second packet queue */
if (db->tx_pkt_cnt == 1) {
/* Set TX length to DM9000 */
- iow(db, DM9000_TXPLL, skb->len & 0xff);
- iow(db, DM9000_TXPLH, (skb->len >> 8) & 0xff);
+ iow(db, DM9000_TXPLL, skb->len);
+ iow(db, DM9000_TXPLH, skb->len >> 8);
/* Issue TX polling command */
iow(db, DM9000_TCR, TCR_TXREQ); /* Cleared after TX complete */
@@ -757,10 +878,8 @@ dm9000_stop(struct net_device *ndev)
{
board_info_t *db = (board_info_t *) ndev->priv;
- PRINTK1("entering %s\n",__FUNCTION__);
-
- /* deleted timer */
- del_timer(&db->timer);
+ if (netif_msg_ifdown(db))
+ dev_dbg(db->dev, "shutting down %s\n", ndev->name);
netif_stop_queue(ndev);
netif_carrier_off(ndev);
@@ -788,10 +907,13 @@ dm9000_tx_done(struct net_device *dev, board_info_t * db)
db->tx_pkt_cnt--;
dev->stats.tx_packets++;
+ if (netif_msg_tx_done(db))
+ dev_dbg(db->dev, "tx done, NSR %02x\n", tx_status);
+
/* Queue packet check & send */
if (db->tx_pkt_cnt > 0) {
- iow(db, DM9000_TXPLL, db->queue_pkt_len & 0xff);
- iow(db, DM9000_TXPLH, (db->queue_pkt_len >> 8) & 0xff);
+ iow(db, DM9000_TXPLL, db->queue_pkt_len);
+ iow(db, DM9000_TXPLH, db->queue_pkt_len >> 8);
iow(db, DM9000_TCR, TCR_TXREQ);
dev->trans_start = jiffies;
}
@@ -803,19 +925,14 @@ static irqreturn_t
dm9000_interrupt(int irq, void *dev_id)
{
struct net_device *dev = dev_id;
- board_info_t *db;
+ board_info_t *db = (board_info_t *) dev->priv;
int int_status;
u8 reg_save;
- PRINTK3("entering %s\n",__FUNCTION__);
-
- if (!dev) {
- PRINTK1("dm9000_interrupt() without DEVICE arg\n");
- return IRQ_HANDLED;
- }
+ dm9000_dbg(db, 3, "entering %s\n", __func__);
/* A real interrupt coming */
- db = (board_info_t *) dev->priv;
+
spin_lock(&db->lock);
/* Save previous register address */
@@ -828,6 +945,9 @@ dm9000_interrupt(int irq, void *dev_id)
int_status = ior(db, DM9000_ISR); /* Got ISR */
iow(db, DM9000_ISR, int_status); /* Clear ISR status */
+ if (netif_msg_intr(db))
+ dev_dbg(db->dev, "interrupt status %02x\n", int_status);
+
/* Received the coming packet */
if (int_status & ISR_PRS)
dm9000_rx(dev);
@@ -847,27 +967,9 @@ dm9000_interrupt(int irq, void *dev_id)
return IRQ_HANDLED;
}
-/*
- * A periodic timer routine
- * Dynamic media sense, allocated Rx buffer...
- */
-static void
-dm9000_timer(unsigned long data)
-{
- struct net_device *dev = (struct net_device *) data;
- board_info_t *db = (board_info_t *) dev->priv;
-
- PRINTK3("dm9000_timer()\n");
-
- mii_check_media(&db->mii, netif_msg_link(db), 0);
-
- /* Set timer again */
- db->timer.expires = DM9000_TIMER_WUT;
- add_timer(&db->timer);
-}
-
struct dm9000_rxhdr {
- u16 RxStatus;
+ u8 RxPktReady;
+ u8 RxStatus;
u16 RxLen;
} __attribute__((__packed__));
@@ -893,7 +995,7 @@ dm9000_rx(struct net_device *dev)
/* Status check: this byte must be 0 or 1 */
if (rxbyte > DM9000_PKT_RDY) {
- printk("status check failed: %d\n", rxbyte);
+ dev_warn(db->dev, "status check fail: %d\n", rxbyte);
iow(db, DM9000_RCR, 0x00); /* Stop Device */
iow(db, DM9000_ISR, IMR_PAR); /* Stop INT request */
return;
@@ -908,30 +1010,38 @@ dm9000_rx(struct net_device *dev)
(db->inblk)(db->io_data, &rxhdr, sizeof(rxhdr));
- RxLen = rxhdr.RxLen;
+ RxLen = le16_to_cpu(rxhdr.RxLen);
+
+ if (netif_msg_rx_status(db))
+ dev_dbg(db->dev, "RX: status %02x, length %04x\n",
+ rxhdr.RxStatus, RxLen);
/* Packet Status check */
if (RxLen < 0x40) {
GoodPacket = false;
- PRINTK1("Bad Packet received (runt)\n");
+ if (netif_msg_rx_err(db))
+ dev_dbg(db->dev, "RX: Bad Packet (runt)\n");
}
if (RxLen > DM9000_PKT_MAX) {
- PRINTK1("RST: RX Len:%x\n", RxLen);
+ dev_dbg(db->dev, "RST: RX Len:%x\n", RxLen);
}
- if (rxhdr.RxStatus & 0xbf00) {
+ if (rxhdr.RxStatus & 0xbf) {
GoodPacket = false;
- if (rxhdr.RxStatus & 0x100) {
- PRINTK1("fifo error\n");
+ if (rxhdr.RxStatus & 0x01) {
+ if (netif_msg_rx_err(db))
+ dev_dbg(db->dev, "fifo error\n");
dev->stats.rx_fifo_errors++;
}
- if (rxhdr.RxStatus & 0x200) {
- PRINTK1("crc error\n");
+ if (rxhdr.RxStatus & 0x02) {
+ if (netif_msg_rx_err(db))
+ dev_dbg(db->dev, "crc error\n");
dev->stats.rx_crc_errors++;
}
- if (rxhdr.RxStatus & 0x8000) {
- PRINTK1("length error\n");
+ if (rxhdr.RxStatus & 0x80) {
+ if (netif_msg_rx_err(db))
+ dev_dbg(db->dev, "length error\n");
dev->stats.rx_length_errors++;
}
}
@@ -960,72 +1070,119 @@ dm9000_rx(struct net_device *dev)
} while (rxbyte == DM9000_PKT_RDY);
}
-/*
- * Read a word data from SROM
- */
-static u16
-read_srom_word(board_info_t * db, int offset)
+static unsigned int
+dm9000_read_locked(board_info_t *db, int reg)
{
- iow(db, DM9000_EPAR, offset);
- iow(db, DM9000_EPCR, EPCR_ERPRR);
- mdelay(8); /* according to the datasheet 200us should be enough,
- but it doesn't work */
- iow(db, DM9000_EPCR, 0x0);
- return (ior(db, DM9000_EPDRL) + (ior(db, DM9000_EPDRH) << 8));
+ unsigned long flags;
+ unsigned int ret;
+
+ spin_lock_irqsave(&db->lock, flags);
+ ret = ior(db, reg);
+ spin_unlock_irqrestore(&db->lock, flags);
+
+ return ret;
+}
+
+static int dm9000_wait_eeprom(board_info_t *db)
+{
+ unsigned int status;
+ int timeout = 8; /* wait max 8msec */
+
+ /* The DM9000 data sheets say we should be able to
+ * poll the ERRE bit in EPCR to wait for the EEPROM
+ * operation. From testing several chips, this bit
+ * does not seem to work.
+ *
+ * We attempt to use the bit, but fall back to the
+ * timeout (which is why we do not return an error
+ * on expiry) to say that the EEPROM operation has
+ * completed.
+ */
+
+ while (1) {
+ status = dm9000_read_locked(db, DM9000_EPCR);
+
+ if ((status & EPCR_ERRE) == 0)
+ break;
+
+ if (timeout-- < 0) {
+ dev_dbg(db->dev, "timeout waiting EEPROM\n");
+ break;
+ }
+ }
+
+ return 0;
}
-#ifdef DM9000_PROGRAM_EEPROM
/*
- * Write a word data to SROM
+ * Read a word data from EEPROM
*/
static void
-write_srom_word(board_info_t * db, int offset, u16 val)
+dm9000_read_eeprom(board_info_t *db, int offset, u8 *to)
{
+ unsigned long flags;
+
+ if (db->flags & DM9000_PLATF_NO_EEPROM) {
+ to[0] = 0xff;
+ to[1] = 0xff;
+ return;
+ }
+
+ mutex_lock(&db->addr_lock);
+
+ spin_lock_irqsave(&db->lock, flags);
+
iow(db, DM9000_EPAR, offset);
- iow(db, DM9000_EPDRH, ((val >> 8) & 0xff));
- iow(db, DM9000_EPDRL, (val & 0xff));
- iow(db, DM9000_EPCR, EPCR_WEP | EPCR_ERPRW);
- mdelay(8); /* same shit */
- iow(db, DM9000_EPCR, 0);
+ iow(db, DM9000_EPCR, EPCR_ERPRR);
+
+ spin_unlock_irqrestore(&db->lock, flags);
+
+ dm9000_wait_eeprom(db);
+
+ /* delay for at-least 150uS */
+ msleep(1);
+
+ spin_lock_irqsave(&db->lock, flags);
+
+ iow(db, DM9000_EPCR, 0x0);
+
+ to[0] = ior(db, DM9000_EPDRL);
+ to[1] = ior(db, DM9000_EPDRH);
+
+ spin_unlock_irqrestore(&db->lock, flags);
+
+ mutex_unlock(&db->addr_lock);
}
/*
- * Only for development:
- * Here we write static data to the eeprom in case
- * we don't have valid content on a new board
+ * Write a word data to SROM
*/
static void
-program_eeprom(board_info_t * db)
+dm9000_write_eeprom(board_info_t *db, int offset, u8 *data)
{
- u16 eeprom[] = { 0x0c00, 0x007f, 0x1300, /* MAC Address */
- 0x0000, /* Autoload: accept nothing */
- 0x0a46, 0x9000, /* Vendor / Product ID */
- 0x0000, /* pin control */
- 0x0000,
- }; /* Wake-up mode control */
- int i;
- for (i = 0; i < 8; i++)
- write_srom_word(db, i, eeprom[i]);
-}
-#endif
+ unsigned long flags;
+ if (db->flags & DM9000_PLATF_NO_EEPROM)
+ return;
-/*
- * Calculate the CRC valude of the Rx packet
- * flag = 1 : return the reverse CRC (for the received packet CRC)
- * 0 : return the normal CRC (for Hash Table index)
- */
+ mutex_lock(&db->addr_lock);
-static unsigned long
-cal_CRC(unsigned char *Data, unsigned int Len, u8 flag)
-{
+ spin_lock_irqsave(&db->lock, flags);
+ iow(db, DM9000_EPAR, offset);
+ iow(db, DM9000_EPDRH, data[1]);
+ iow(db, DM9000_EPDRL, data[0]);
+ iow(db, DM9000_EPCR, EPCR_WEP | EPCR_ERPRW);
+ spin_unlock_irqrestore(&db->lock, flags);
+
+ dm9000_wait_eeprom(db);
- u32 crc = ether_crc_le(Len, Data);
+ mdelay(1); /* wait at least 150uS to clear */
- if (flag)
- return ~crc;
+ spin_lock_irqsave(&db->lock, flags);
+ iow(db, DM9000_EPCR, 0);
+ spin_unlock_irqrestore(&db->lock, flags);
- return crc;
+ mutex_unlock(&db->addr_lock);
}
/*
@@ -1037,15 +1194,16 @@ dm9000_hash_table(struct net_device *dev)
board_info_t *db = (board_info_t *) dev->priv;
struct dev_mc_list *mcptr = dev->mc_list;
int mc_cnt = dev->mc_count;
+ int i, oft;
u32 hash_val;
- u16 i, oft, hash_table[4];
+ u16 hash_table[4];
unsigned long flags;
- PRINTK2("dm9000_hash_table()\n");
+ dm9000_dbg(db, 1, "entering %s\n", __func__);
- spin_lock_irqsave(&db->lock,flags);
+ spin_lock_irqsave(&db->lock, flags);
- for (i = 0, oft = 0x10; i < 6; i++, oft++)
+ for (i = 0, oft = DM9000_PAR; i < 6; i++, oft++)
iow(db, oft, dev->dev_addr[i]);
/* Clear Hash Table */
@@ -1057,21 +1215,33 @@ dm9000_hash_table(struct net_device *dev)
/* the multicast address in Hash Table : 64 bits */
for (i = 0; i < mc_cnt; i++, mcptr = mcptr->next) {
- hash_val = cal_CRC((char *) mcptr->dmi_addr, 6, 0) & 0x3f;
+ hash_val = ether_crc_le(6, mcptr->dmi_addr) & 0x3f;
hash_table[hash_val / 16] |= (u16) 1 << (hash_val % 16);
}
/* Write the hash table to MAC MD table */
- for (i = 0, oft = 0x16; i < 4; i++) {
- iow(db, oft++, hash_table[i] & 0xff);
- iow(db, oft++, (hash_table[i] >> 8) & 0xff);
+ for (i = 0, oft = DM9000_MAR; i < 4; i++) {
+ iow(db, oft++, hash_table[i]);
+ iow(db, oft++, hash_table[i] >> 8);
}
- spin_unlock_irqrestore(&db->lock,flags);
+ spin_unlock_irqrestore(&db->lock, flags);
}
/*
+ * Sleep, either by using msleep() or if we are suspending, then
+ * use mdelay() to sleep.
+ */
+static void dm9000_msleep(board_info_t *db, unsigned int ms)
+{
+ if (db->in_suspend)
+ mdelay(ms);
+ else
+ msleep(ms);
+}
+
+/*
* Read a word from phyxcer
*/
static int
@@ -1082,6 +1252,8 @@ dm9000_phy_read(struct net_device *dev, int phy_reg_unused, int reg)
unsigned int reg_save;
int ret;
+ mutex_lock(&db->addr_lock);
+
spin_lock_irqsave(&db->lock,flags);
/* Save previous register address */
@@ -1091,7 +1263,15 @@ dm9000_phy_read(struct net_device *dev, int phy_reg_unused, int reg)
iow(db, DM9000_EPAR, DM9000_PHY | reg);
iow(db, DM9000_EPCR, 0xc); /* Issue phyxcer read command */
- udelay(100); /* Wait read complete */
+
+ writeb(reg_save, db->io_addr);
+ spin_unlock_irqrestore(&db->lock,flags);
+
+ dm9000_msleep(db, 1); /* Wait read complete */
+
+ spin_lock_irqsave(&db->lock,flags);
+ reg_save = readb(db->io_addr);
+
iow(db, DM9000_EPCR, 0x0); /* Clear phyxcer read command */
/* The read data keeps on REG_0D & REG_0E */
@@ -1099,9 +1279,9 @@ dm9000_phy_read(struct net_device *dev, int phy_reg_unused, int reg)
/* restore the previous address */
writeb(reg_save, db->io_addr);
-
spin_unlock_irqrestore(&db->lock,flags);
+ mutex_unlock(&db->addr_lock);
return ret;
}
@@ -1115,6 +1295,8 @@ dm9000_phy_write(struct net_device *dev, int phyaddr_unused, int reg, int value)
unsigned long flags;
unsigned long reg_save;
+ mutex_lock(&db->addr_lock);
+
spin_lock_irqsave(&db->lock,flags);
/* Save previous register address */
@@ -1124,25 +1306,38 @@ dm9000_phy_write(struct net_device *dev, int phyaddr_unused, int reg, int value)
iow(db, DM9000_EPAR, DM9000_PHY | reg);
/* Fill the written data into REG_0D & REG_0E */
- iow(db, DM9000_EPDRL, (value & 0xff));
- iow(db, DM9000_EPDRH, ((value >> 8) & 0xff));
+ iow(db, DM9000_EPDRL, value);
+ iow(db, DM9000_EPDRH, value >> 8);
iow(db, DM9000_EPCR, 0xa); /* Issue phyxcer write command */
- udelay(500); /* Wait write complete */
+
+ writeb(reg_save, db->io_addr);
+ spin_unlock_irqrestore(&db->lock, flags);
+
+ dm9000_msleep(db, 1); /* Wait write complete */
+
+ spin_lock_irqsave(&db->lock,flags);
+ reg_save = readb(db->io_addr);
+
iow(db, DM9000_EPCR, 0x0); /* Clear phyxcer write command */
/* restore the previous address */
writeb(reg_save, db->io_addr);
- spin_unlock_irqrestore(&db->lock,flags);
+ spin_unlock_irqrestore(&db->lock, flags);
+ mutex_unlock(&db->addr_lock);
}
static int
dm9000_drv_suspend(struct platform_device *dev, pm_message_t state)
{
struct net_device *ndev = platform_get_drvdata(dev);
+ board_info_t *db;
if (ndev) {
+ db = (board_info_t *) ndev->priv;
+ db->in_suspend = 1;
+
if (netif_running(ndev)) {
netif_device_detach(ndev);
dm9000_shutdown(ndev);
@@ -1165,6 +1360,8 @@ dm9000_drv_resume(struct platform_device *dev)
netif_device_attach(ndev);
}
+
+ db->in_suspend = 0;
}
return 0;
}
@@ -1180,8 +1377,7 @@ dm9000_drv_remove(struct platform_device *pdev)
dm9000_release_board(pdev, (board_info_t *) ndev->priv);
free_netdev(ndev); /* free device structure */
- PRINTK1("clean_module() exit\n");
-
+ dev_dbg(&pdev->dev, "released and freed device\n");
return 0;
}
@@ -1199,7 +1395,7 @@ static struct platform_driver dm9000_driver = {
static int __init
dm9000_init(void)
{
- printk(KERN_INFO "%s Ethernet Driver\n", CARDNAME);
+ printk(KERN_INFO "%s Ethernet Driver, V%s\n", CARDNAME, DRV_VERSION);
return platform_driver_register(&dm9000_driver); /* search board and register */
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-19 00:21:31 +0000