From 7d2e3cb7000b883a8e489485ac249be572fe17b1 Mon Sep 17 00:00:00 2001
From: Jeff Garzik <jeff@garzik.org>
Date: Tue, 13 May 2008 01:41:58 -0400
Subject: [netdrvr] Trim trailing whitespace for several drivers

Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
---
 drivers/net/dm9000.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

(limited to 'drivers/net/dm9000.c')

diff --git a/drivers/net/dm9000.c b/drivers/net/dm9000.c
index e6fe2614ea6d..12b4626102e1 100644
--- a/drivers/net/dm9000.c
+++ b/drivers/net/dm9000.c
@@ -696,7 +696,7 @@ dm9000_probe(struct platform_device *pdev)
 
 	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);
@@ -746,7 +746,7 @@ dm9000_open(struct net_device *dev)
 		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))
@@ -1089,7 +1089,7 @@ static int dm9000_wait_eeprom(board_info_t *db)
 	/* 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. 
+	 * 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
-- 
cgit v1.2.3


From 08c3f57caa16b231f6627889cb43581c020f566a Mon Sep 17 00:00:00 2001
From: Laurent Pinchart <laurentp@cse-semaphore.com>
Date: Tue, 24 Jun 2008 22:15:57 +0100
Subject: DM9000: Remove the 2 resources probe scheme.

The dm9000 driver accepts either 2 or 3 resources to describe the platform
devices. The 2 resources case abuses the ioresource mechanism by passing
ioremap()ed memory through the platform device resources. This patch removes
that case and converts boards that were using it to the 3 resources scheme.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Laurent Pinchart <laurentp@cse-semaphore.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
---
 drivers/net/dm9000.c | 106 +++++++++++++++++++++------------------------------
 1 file changed, 44 insertions(+), 62 deletions(-)

(limited to 'drivers/net/dm9000.c')

diff --git a/drivers/net/dm9000.c b/drivers/net/dm9000.c
index 08a7365a7d10..b6d4b8e1d9e2 100644
--- a/drivers/net/dm9000.c
+++ b/drivers/net/dm9000.c
@@ -528,7 +528,6 @@ dm9000_probe(struct platform_device *pdev)
 	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;
 	int i;
@@ -558,81 +557,64 @@ dm9000_probe(struct platform_device *pdev)
 	INIT_DELAYED_WORK(&db->phy_poll, dm9000_poll_work);
 
 
-	if (pdev->num_resources < 2) {
+	if (pdev->num_resources < 3) {
 		ret = -ENODEV;
 		goto out;
-	} else if (pdev->num_resources == 2) {
-		base = pdev->resource[0].start;
-
-		if (!request_mem_region(base, 4, ndev->name)) {
-			ret = -EBUSY;
-			goto out;
-		}
-
-		ndev->base_addr = base;
-		ndev->irq = pdev->resource[1].start;
-		db->io_addr = (void __iomem *)base;
-		db->io_data = (void __iomem *)(base + 4);
+	}
 
-		/* ensure at least we have a default set of IO routines */
-		dm9000_set_io(db, 2);
+	db->addr_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	db->data_res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
+	db->irq_res  = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
 
-	} else {
-		db->addr_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-		db->data_res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
-		db->irq_res  = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
-
-		if (db->addr_res == NULL || db->data_res == NULL ||
-		    db->irq_res == NULL) {
-			dev_err(db->dev, "insufficient resources\n");
-			ret = -ENOENT;
-			goto out;
-		}
+	if (db->addr_res == NULL || db->data_res == NULL ||
+	    db->irq_res == NULL) {
+		dev_err(db->dev, "insufficient resources\n");
+		ret = -ENOENT;
+		goto out;
+	}
 
-		i = res_size(db->addr_res);
-		db->addr_req = request_mem_region(db->addr_res->start, i,
-						  pdev->name);
+	iosize = res_size(db->addr_res);
+	db->addr_req = request_mem_region(db->addr_res->start, iosize,
+					  pdev->name);
 
-		if (db->addr_req == NULL) {
-			dev_err(db->dev, "cannot claim address reg area\n");
-			ret = -EIO;
-			goto out;
-		}
-
-		db->io_addr = ioremap(db->addr_res->start, i);
+	if (db->addr_req == NULL) {
+		dev_err(db->dev, "cannot claim address reg area\n");
+		ret = -EIO;
+		goto out;
+	}
 
-		if (db->io_addr == NULL) {
-			dev_err(db->dev, "failed to ioremap address reg\n");
-			ret = -EINVAL;
-			goto out;
-		}
+	db->io_addr = ioremap(db->addr_res->start, iosize);
 
-		iosize = res_size(db->data_res);
-		db->data_req = request_mem_region(db->data_res->start, iosize,
-						  pdev->name);
+	if (db->io_addr == NULL) {
+		dev_err(db->dev, "failed to ioremap address reg\n");
+		ret = -EINVAL;
+		goto out;
+	}
 
-		if (db->data_req == NULL) {
-			dev_err(db->dev, "cannot claim data reg area\n");
-			ret = -EIO;
-			goto out;
-		}
+	iosize = res_size(db->data_res);
+	db->data_req = request_mem_region(db->data_res->start, iosize,
+					  pdev->name);
 
-		db->io_data = ioremap(db->data_res->start, iosize);
+	if (db->data_req == NULL) {
+		dev_err(db->dev, "cannot claim data reg area\n");
+		ret = -EIO;
+		goto out;
+	}
 
-		if (db->io_data == NULL) {
-			dev_err(db->dev,"failed to ioremap data reg\n");
-			ret = -EINVAL;
-			goto out;
-		}
+	db->io_data = ioremap(db->data_res->start, iosize);
 
-		/* fill in parameters for net-dev structure */
+	if (db->io_data == NULL) {
+		dev_err(db->dev, "failed to ioremap data reg\n");
+		ret = -EINVAL;
+		goto out;
+	}
 
-		ndev->base_addr = (unsigned long)db->io_addr;
-		ndev->irq	= db->irq_res->start;
+	/* fill in parameters for net-dev structure */
+	ndev->base_addr = (unsigned long)db->io_addr;
+	ndev->irq	= db->irq_res->start;
 
-		/* ensure at least we have a default set of IO routines */
-		dm9000_set_io(db, iosize);
-	}
+	/* ensure at least we have a default set of IO routines */
+	dm9000_set_io(db, iosize);
 
 	/* check to see if anything is being over-ridden */
 	if (pdata != NULL) {
-- 
cgit v1.2.3


From 6d406b3c76b369a7b043470719761aa6ee1a38d1 Mon Sep 17 00:00:00 2001
From: Ben Dooks <ben-linux@fluff.org>
Date: Tue, 24 Jun 2008 22:15:59 +0100
Subject: DM9000: Add support for DM9000A and DM9000B chips

Add support for both the DM9000A and DM9000B versions of
the DM9000 networking chip. This includes adding support
for the Link-Change IRQ which is used instead of polling
the PHY every 2 seconds.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
---
 drivers/net/dm9000.c | 66 ++++++++++++++++++++++++++++++++++++++++++++++++----
 drivers/net/dm9000.h | 11 +++++++++
 2 files changed, 72 insertions(+), 5 deletions(-)

(limited to 'drivers/net/dm9000.c')

diff --git a/drivers/net/dm9000.c b/drivers/net/dm9000.c
index b6d4b8e1d9e2..73270d93ae38 100644
--- a/drivers/net/dm9000.c
+++ b/drivers/net/dm9000.c
@@ -85,6 +85,16 @@ MODULE_PARM_DESC(watchdog, "transmit timeout in milliseconds");
  * these two devices.
  */
 
+/* The driver supports the original DM9000E, and now the two newer
+ * devices, DM9000A and DM9000B.
+ */
+
+enum dm9000_type {
+	TYPE_DM9000E,	/* original DM9000 */
+	TYPE_DM9000A,
+	TYPE_DM9000B
+};
+
 /* Structure/enum declaration ------------------------------- */
 typedef struct board_info {
 
@@ -98,9 +108,11 @@ typedef struct board_info {
 	u16 dbug_cnt;
 	u8 io_mode;		/* 0:word, 2:byte */
 	u8 phy_addr;
+	u8 imr_all;
 	unsigned int flags;
 	unsigned int in_suspend :1;
 
+	enum dm9000_type type;
 	int debug_level;
 
 	void (*inblk)(void __iomem *port, void *data, int length);
@@ -302,7 +314,8 @@ static void dm9000_set_io(struct board_info *db, int byte_width)
 
 static void dm9000_schedule_poll(board_info_t *db)
 {
-	schedule_delayed_work(&db->phy_poll, HZ * 2);
+	if (db->type == TYPE_DM9000E)
+		schedule_delayed_work(&db->phy_poll, HZ * 2);
 }
 
 /* Our watchdog timed out. Called by the networking layer */
@@ -516,6 +529,17 @@ dm9000_release_board(struct platform_device *pdev, struct board_info *db)
 	}
 }
 
+static unsigned char dm9000_type_to_char(enum dm9000_type type)
+{
+	switch (type) {
+	case TYPE_DM9000E: return 'e';
+	case TYPE_DM9000A: return 'a';
+	case TYPE_DM9000B: return 'b';
+	}
+
+	return '?';
+}
+
 #define res_size(_r) (((_r)->end - (_r)->start) + 1)
 
 /*
@@ -665,6 +689,23 @@ dm9000_probe(struct platform_device *pdev)
 		goto out;
 	}
 
+	/* Identify what type of DM9000 we are working on */
+
+	id_val = ior(db, DM9000_CHIPR);
+	dev_dbg(db->dev, "dm9000 revision 0x%02x\n", id_val);
+
+	switch (id_val) {
+	case CHIPR_DM9000A:
+		db->type = TYPE_DM9000A;
+		break;
+	case CHIPR_DM9000B:
+		db->type = TYPE_DM9000B;
+		break;
+	default:
+		dev_dbg(db->dev, "ID %02x => defaulting to DM9000E\n", id_val);
+		db->type = TYPE_DM9000E;
+	}
+
 	/* from this point we assume that we have found a DM9000 */
 
 	/* driver system function */
@@ -715,8 +756,9 @@ dm9000_probe(struct platform_device *pdev)
 
 	if (ret == 0) {
 		DECLARE_MAC_BUF(mac);
-		printk("%s: dm9000 at %p,%p IRQ %d MAC: %s (%s)\n",
-		       ndev->name,  db->io_addr, db->io_data, ndev->irq,
+		printk(KERN_INFO "%s: dm9000%c at %p,%p IRQ %d MAC: %s (%s)\n",
+		       ndev->name, dm9000_type_to_char(db->type),
+		       db->io_addr, db->io_data, ndev->irq,
 		       print_mac(mac, ndev->dev_addr), mac_src);
 	}
 	return 0;
@@ -778,6 +820,7 @@ static void
 dm9000_init_dm9000(struct net_device *dev)
 {
 	board_info_t *db = (board_info_t *) dev->priv;
+	unsigned int imr;
 
 	dm9000_dbg(db, 1, "entering %s\n", __func__);
 
@@ -804,8 +847,14 @@ dm9000_init_dm9000(struct net_device *dev)
 	/* Set address filter table */
 	dm9000_hash_table(dev);
 
+	imr = IMR_PAR | IMR_PTM | IMR_PRM;
+	if (db->type != TYPE_DM9000E)
+		imr |= IMR_LNKCHNG;
+
+	db->imr_all = imr;
+
 	/* Enable TX/RX interrupt mask */
-	iow(db, DM9000_IMR, IMR_PAR | IMR_PTM | IMR_PRM);
+	iow(db, DM9000_IMR, imr);
 
 	/* Init Driver variable */
 	db->tx_pkt_cnt = 0;
@@ -962,8 +1011,15 @@ dm9000_interrupt(int irq, void *dev_id)
 	if (int_status & ISR_PTS)
 		dm9000_tx_done(dev, db);
 
+	if (db->type != TYPE_DM9000E) {
+		if (int_status & ISR_LNKCHNG) {
+			/* fire a link-change request */
+			schedule_delayed_work(&db->phy_poll, 1);
+		}
+	}
+
 	/* Re-enable interrupt mask */
-	iow(db, DM9000_IMR, IMR_PAR | IMR_PTM | IMR_PRM);
+	iow(db, DM9000_IMR, db->imr_all);
 
 	/* Restore previous register address */
 	writeb(reg_save, db->io_addr);
diff --git a/drivers/net/dm9000.h b/drivers/net/dm9000.h
index 82cad360bafc..ba25cf541420 100644
--- a/drivers/net/dm9000.h
+++ b/drivers/net/dm9000.h
@@ -45,6 +45,9 @@
 #define DM9000_CHIPR           0x2C
 #define DM9000_SMCR            0x2F
 
+#define CHIPR_DM9000A	       0x19
+#define CHIPR_DM9000B	       0x1B
+
 #define DM9000_MRCMDX          0xF0
 #define DM9000_MRCMD           0xF2
 #define DM9000_MRRL            0xF4
@@ -131,5 +134,13 @@
 #define DM9000_PKT_RDY		0x01	/* Packet ready to receive */
 #define DM9000_PKT_MAX		1536	/* Received packet max size */
 
+/* DM9000A / DM9000B definitions */
+
+#define IMR_LNKCHNG		(1<<5)
+#define IMR_UNDERRUN		(1<<4)
+
+#define ISR_LNKCHNG		(1<<5)
+#define ISR_UNDERRUN		(1<<4)
+
 #endif /* _DM9000X_H_ */
 
-- 
cgit v1.2.3


From 9088fa4fa2f0b10bf4d9a17381a5ec3485751cb7 Mon Sep 17 00:00:00 2001
From: Ben Dooks <ben-linux@fluff.org>
Date: Tue, 24 Jun 2008 22:16:00 +0100
Subject: DM9000: Cleanups after the resource changes

Remove the now extraneous checks in dm9000_release_board()
now that the two-resource case is removed. Also remove the
check on pdev->num_resources, as we check the return data
from platform_get_resource() to ensure we have not only
the right number but the right type of resources as well.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
---
 drivers/net/dm9000.c | 24 ++++--------------------
 1 file changed, 4 insertions(+), 20 deletions(-)

(limited to 'drivers/net/dm9000.c')

diff --git a/drivers/net/dm9000.c b/drivers/net/dm9000.c
index 73270d93ae38..79bdd9e29a01 100644
--- a/drivers/net/dm9000.c
+++ b/drivers/net/dm9000.c
@@ -505,12 +505,6 @@ dm9000_poll_work(struct work_struct *w)
 static void
 dm9000_release_board(struct platform_device *pdev, struct board_info *db)
 {
-	if (db->data_res == NULL) {
-		if (db->addr_res != NULL)
-			release_mem_region((unsigned long)db->io_addr, 4);
-		return;
-	}
-
 	/* unmap our resources */
 
 	iounmap(db->io_addr);
@@ -518,15 +512,11 @@ dm9000_release_board(struct platform_device *pdev, struct board_info *db)
 
 	/* release the resources */
 
-	if (db->data_req != NULL) {
-		release_resource(db->data_req);
-		kfree(db->data_req);
-	}
+	release_resource(db->data_req);
+	kfree(db->data_req);
 
-	if (db->addr_req != NULL) {
-		release_resource(db->addr_req);
-		kfree(db->addr_req);
-	}
+	release_resource(db->addr_req);
+	kfree(db->addr_req);
 }
 
 static unsigned char dm9000_type_to_char(enum dm9000_type type)
@@ -580,12 +570,6 @@ dm9000_probe(struct platform_device *pdev)
 
 	INIT_DELAYED_WORK(&db->phy_poll, dm9000_poll_work);
 
-
-	if (pdev->num_resources < 3) {
-		ret = -ENODEV;
-		goto out;
-	}
-
 	db->addr_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	db->data_res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
 	db->irq_res  = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
-- 
cgit v1.2.3


From 59eae1fa3ba19be35f09b37e73d90ac5028996fe Mon Sep 17 00:00:00 2001
From: Ben Dooks <ben-linux@fluff.org>
Date: Tue, 24 Jun 2008 22:16:01 +0100
Subject: DM9000: Cleanup source code

Cleanup bits of the DM9000 driver to make the code
neater and easier to read. This is includes removing
some old definitions, re-indenting areas, etc.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
---
 drivers/net/dm9000.c | 62 +++++++++++++++++++++++++---------------------------
 1 file changed, 30 insertions(+), 32 deletions(-)

(limited to 'drivers/net/dm9000.c')

diff --git a/drivers/net/dm9000.c b/drivers/net/dm9000.c
index 79bdd9e29a01..79538ab4ee60 100644
--- a/drivers/net/dm9000.c
+++ b/drivers/net/dm9000.c
@@ -44,9 +44,8 @@
 
 #define DM9000_PHY		0x40	/* PHY address 0x01 */
 
-#define CARDNAME "dm9000"
-#define PFX CARDNAME ": "
-#define DRV_VERSION	"1.30"
+#define CARDNAME	"dm9000"
+#define DRV_VERSION	"1.31"
 
 #ifdef CONFIG_BLACKFIN
 #define readsb	insb
@@ -98,22 +97,23 @@ enum dm9000_type {
 /* Structure/enum declaration ------------------------------- */
 typedef struct board_info {
 
-	void __iomem *io_addr;	/* Register I/O base address */
-	void __iomem *io_data;	/* Data I/O address */
-	u16 irq;		/* IRQ */
+	void __iomem	*io_addr;	/* Register I/O base address */
+	void __iomem	*io_data;	/* Data I/O address */
+	u16		 irq;		/* IRQ */
 
-	u16 tx_pkt_cnt;
-	u16 queue_pkt_len;
-	u16 queue_start_addr;
-	u16 dbug_cnt;
-	u8 io_mode;		/* 0:word, 2:byte */
-	u8 phy_addr;
-	u8 imr_all;
-	unsigned int flags;
-	unsigned int in_suspend :1;
+	u16		tx_pkt_cnt;
+	u16		queue_pkt_len;
+	u16		queue_start_addr;
+	u16		dbug_cnt;
+	u8		io_mode;		/* 0:word, 2:byte */
+	u8		phy_addr;
+	u8		imr_all;
+
+	unsigned int	flags;
+	unsigned int	in_suspend :1;
+	int		debug_level;
 
 	enum dm9000_type type;
-	int debug_level;
 
 	void (*inblk)(void __iomem *port, void *data, int length);
 	void (*outblk)(void __iomem *port, void *data, int length);
@@ -132,10 +132,10 @@ typedef struct board_info {
 	struct delayed_work phy_poll;
 	struct net_device  *ndev;
 
-	spinlock_t lock;
+	spinlock_t	lock;
 
 	struct mii_if_info mii;
-	u32 msg_enable;
+	u32		msg_enable;
 } board_info_t;
 
 /* debug code */
@@ -153,19 +153,16 @@ static inline board_info_t *to_dm9000_board(struct net_device *dev)
 }
 
 /* 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_init_dm9000(struct net_device *);
 
 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 int dm9000_phy_read(struct net_device *dev, int phy, int reg);
+static void dm9000_phy_write(struct net_device *dev, int phy, int reg, int v);
 
 static void dm9000_read_eeprom(board_info_t *, int addr, u8 *to);
 static void dm9000_write_eeprom(board_info_t *, int addr, u8 *dp);
@@ -655,7 +652,7 @@ dm9000_probe(struct platform_device *pdev)
 
 	dm9000_reset(db);
 
-	/* try two times, DM9000 sometimes gets the first read wrong */
+	/* try multiple times, DM9000 sometimes gets the read wrong */
 	for (i = 0; i < 8; i++) {
 		id_val  = ior(db, DM9000_VIDL);
 		id_val |= (u32)ior(db, DM9000_VIDH) << 8;
@@ -763,7 +760,7 @@ out:
 static int
 dm9000_open(struct net_device *dev)
 {
-	board_info_t *db = (board_info_t *) dev->priv;
+	board_info_t *db = dev->priv;
 	unsigned long irqflags = db->irq_res->flags & IRQF_TRIGGER_MASK;
 
 	if (netif_msg_ifup(db))
@@ -803,7 +800,7 @@ dm9000_open(struct net_device *dev)
 static void
 dm9000_init_dm9000(struct net_device *dev)
 {
-	board_info_t *db = (board_info_t *) dev->priv;
+	board_info_t *db = dev->priv;
 	unsigned int imr;
 
 	dm9000_dbg(db, 1, "entering %s\n", __func__);
@@ -854,7 +851,7 @@ static int
 dm9000_start_xmit(struct sk_buff *skb, struct net_device *dev)
 {
 	unsigned long flags;
-	board_info_t *db = (board_info_t *) dev->priv;
+	board_info_t *db = dev->priv;
 
 	dm9000_dbg(db, 3, "%s:\n", __func__);
 
@@ -897,7 +894,7 @@ dm9000_start_xmit(struct sk_buff *skb, struct net_device *dev)
 static void
 dm9000_shutdown(struct net_device *dev)
 {
-	board_info_t *db = (board_info_t *) dev->priv;
+	board_info_t *db = dev->priv;
 
 	/* RESET device */
 	dm9000_phy_write(dev, 0, MII_BMCR, BMCR_RESET);	/* PHY RESET */
@@ -913,7 +910,7 @@ dm9000_shutdown(struct net_device *dev)
 static int
 dm9000_stop(struct net_device *ndev)
 {
-	board_info_t *db = (board_info_t *) ndev->priv;
+	board_info_t *db = ndev->priv;
 
 	if (netif_msg_ifdown(db))
 		dev_dbg(db->dev, "shutting down %s\n", ndev->name);
@@ -964,7 +961,7 @@ static irqreturn_t
 dm9000_interrupt(int irq, void *dev_id)
 {
 	struct net_device *dev = dev_id;
-	board_info_t *db = (board_info_t *) dev->priv;
+	board_info_t *db = dev->priv;
 	int int_status;
 	u8 reg_save;
 
@@ -1345,7 +1342,8 @@ dm9000_phy_read(struct net_device *dev, int phy_reg_unused, int reg)
  *   Write a word to phyxcer
  */
 static void
-dm9000_phy_write(struct net_device *dev, int phyaddr_unused, int reg, int value)
+dm9000_phy_write(struct net_device *dev,
+		 int phyaddr_unused, int reg, int value)
 {
 	board_info_t *db = (board_info_t *) dev->priv;
 	unsigned long flags;
@@ -1454,7 +1452,7 @@ dm9000_init(void)
 {
 	printk(KERN_INFO "%s Ethernet Driver, V%s\n", CARDNAME, DRV_VERSION);
 
-	return platform_driver_register(&dm9000_driver);	/* search board and register */
+	return platform_driver_register(&dm9000_driver);
 }
 
 static void __exit
-- 
cgit v1.2.3


From f8d79e79a1700fdcf26a1dfcaefad905b1279600 Mon Sep 17 00:00:00 2001
From: Ben Dooks <ben-linux@fluff.org>
Date: Tue, 24 Jun 2008 22:16:02 +0100
Subject: DM9000: Cleanup source code - remove forward declerations

Cleanup the source code by moving the code around to avoid
having to declare the functions before they are used.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
---
 drivers/net/dm9000.c | 1140 +++++++++++++++++++++++++-------------------------
 1 file changed, 560 insertions(+), 580 deletions(-)

(limited to 'drivers/net/dm9000.c')

diff --git a/drivers/net/dm9000.c b/drivers/net/dm9000.c
index 79538ab4ee60..679c291107f5 100644
--- a/drivers/net/dm9000.c
+++ b/drivers/net/dm9000.c
@@ -152,23 +152,6 @@ static inline board_info_t *to_dm9000_board(struct net_device *dev)
 	return dev->priv;
 }
 
-/* function declaration ------------------------------------- */
-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 void dm9000_init_dm9000(struct net_device *);
-
-static irqreturn_t dm9000_interrupt(int, void *);
-
-static int dm9000_phy_read(struct net_device *dev, int phy, int reg);
-static void dm9000_phy_write(struct net_device *dev, int phy, int reg, int v);
-
-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 *);
-
 /* DM9000 network board routine ---------------------------- */
 
 static void
@@ -315,49 +298,129 @@ static void dm9000_schedule_poll(board_info_t *db)
 		schedule_delayed_work(&db->phy_poll, HZ * 2);
 }
 
-/* Our watchdog timed out. Called by the networking layer */
-static void dm9000_timeout(struct net_device *dev)
+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);
+}
+
+static unsigned int
+dm9000_read_locked(board_info_t *db, int reg)
 {
-	board_info_t *db = (board_info_t *) dev->priv;
-	u8 reg_save;
 	unsigned long flags;
+	unsigned int ret;
 
-	/* Save previous register address */
-	reg_save = readb(db->io_addr);
-	spin_lock_irqsave(&db->lock,flags);
+	spin_lock_irqsave(&db->lock, flags);
+	ret = ior(db, reg);
+	spin_unlock_irqrestore(&db->lock, flags);
 
-	netif_stop_queue(dev);
-	dm9000_reset(db);
-	dm9000_init_dm9000(dev);
-	/* We can accept TX packets again */
-	dev->trans_start = jiffies;
-	netif_wake_queue(dev);
+	return ret;
+}
 
-	/* Restore previous register address */
-	writeb(reg_save, db->io_addr);
-	spin_unlock_irqrestore(&db->lock,flags);
+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 CONFIG_NET_POLL_CONTROLLER
 /*
- *Used by netconsole
+ *  Read a word data from EEPROM
  */
-static void dm9000_poll_controller(struct net_device *dev)
+static void
+dm9000_read_eeprom(board_info_t *db, int offset, u8 *to)
 {
-	disable_irq(dev->irq);
-	dm9000_interrupt(dev->irq,dev);
-	enable_irq(dev->irq);
+	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_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);
 }
-#endif
 
-static int dm9000_ioctl(struct net_device *dev, struct ifreq *req, int cmd)
+/*
+ * Write a word data to SROM
+ */
+static void
+dm9000_write_eeprom(board_info_t *db, int offset, u8 *data)
 {
-	board_info_t *dm = to_dm9000_board(dev);
+	unsigned long flags;
 
-	if (!netif_running(dev))
-		return -EINVAL;
+	if (db->flags & DM9000_PLATF_NO_EEPROM)
+		return;
 
-	return generic_mii_ioctl(&dm->mii, if_mii(req), cmd, NULL);
+	mutex_lock(&db->addr_lock);
+
+	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);
+
+	mdelay(1);	/* wait at least 150uS to clear */
+
+	spin_lock_irqsave(&db->lock, flags);
+	iow(db, DM9000_EPCR, 0);
+	spin_unlock_irqrestore(&db->lock, flags);
+
+	mutex_unlock(&db->addr_lock);
 }
 
 /* ethtool ops */
@@ -527,294 +590,78 @@ static unsigned char dm9000_type_to_char(enum dm9000_type type)
 	return '?';
 }
 
-#define res_size(_r) (((_r)->end - (_r)->start) + 1)
-
 /*
- * Search DM9000 board, allocate space and register it
+ *  Set DM9000 multicast address
  */
-static int __devinit
-dm9000_probe(struct platform_device *pdev)
+static void
+dm9000_hash_table(struct net_device *dev)
 {
-	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;
-	int ret = 0;
-	int iosize;
-	int i;
-	u32 id_val;
-
-	/* Init network device */
-	ndev = alloc_etherdev(sizeof (struct board_info));
-	if (!ndev) {
-		dev_err(&pdev->dev, "could not allocate device.\n");
-		return -ENOMEM;
-	}
+	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 hash_table[4];
+	u8 rcr = RCR_DIS_LONG | RCR_DIS_CRC | RCR_RXEN;
+	unsigned long flags;
 
-	SET_NETDEV_DEV(ndev, &pdev->dev);
+	dm9000_dbg(db, 1, "entering %s\n", __func__);
 
-	dev_dbg(&pdev->dev, "dm9000_probe()\n");
+	spin_lock_irqsave(&db->lock, flags);
 
-	/* setup board info structure */
-	db = (struct board_info *) ndev->priv;
-	memset(db, 0, sizeof (*db));
+	for (i = 0, oft = DM9000_PAR; i < 6; i++, oft++)
+		iow(db, oft, dev->dev_addr[i]);
 
-	db->dev = &pdev->dev;
-	db->ndev = ndev;
+	/* Clear Hash Table */
+	for (i = 0; i < 4; i++)
+		hash_table[i] = 0x0;
 
-	spin_lock_init(&db->lock);
-	mutex_init(&db->addr_lock);
+	/* broadcast address */
+	hash_table[3] = 0x8000;
 
-	INIT_DELAYED_WORK(&db->phy_poll, dm9000_poll_work);
+	if (dev->flags & IFF_PROMISC)
+		rcr |= RCR_PRMSC;
 
-	db->addr_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	db->data_res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
-	db->irq_res  = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
+	if (dev->flags & IFF_ALLMULTI)
+		rcr |= RCR_ALL;
 
-	if (db->addr_res == NULL || db->data_res == NULL ||
-	    db->irq_res == NULL) {
-		dev_err(db->dev, "insufficient resources\n");
-		ret = -ENOENT;
-		goto out;
+	/* the multicast address in Hash Table : 64 bits */
+	for (i = 0; i < mc_cnt; i++, mcptr = mcptr->next) {
+		hash_val = ether_crc_le(6, mcptr->dmi_addr) & 0x3f;
+		hash_table[hash_val / 16] |= (u16) 1 << (hash_val % 16);
 	}
 
-	iosize = res_size(db->addr_res);
-	db->addr_req = request_mem_region(db->addr_res->start, iosize,
-					  pdev->name);
-
-	if (db->addr_req == NULL) {
-		dev_err(db->dev, "cannot claim address reg area\n");
-		ret = -EIO;
-		goto out;
+	/* Write the hash table to MAC MD table */
+	for (i = 0, oft = DM9000_MAR; i < 4; i++) {
+		iow(db, oft++, hash_table[i]);
+		iow(db, oft++, hash_table[i] >> 8);
 	}
 
-	db->io_addr = ioremap(db->addr_res->start, iosize);
+	iow(db, DM9000_RCR, rcr);
+	spin_unlock_irqrestore(&db->lock, flags);
+}
 
-	if (db->io_addr == NULL) {
-		dev_err(db->dev, "failed to ioremap address reg\n");
-		ret = -EINVAL;
-		goto out;
-	}
+/*
+ * Initilize dm9000 board
+ */
+static void
+dm9000_init_dm9000(struct net_device *dev)
+{
+	board_info_t *db = dev->priv;
+	unsigned int imr;
 
-	iosize = res_size(db->data_res);
-	db->data_req = request_mem_region(db->data_res->start, iosize,
-					  pdev->name);
+	dm9000_dbg(db, 1, "entering %s\n", __func__);
 
-	if (db->data_req == NULL) {
-		dev_err(db->dev, "cannot claim data reg area\n");
-		ret = -EIO;
-		goto out;
-	}
+	/* I/O mode */
+	db->io_mode = ior(db, DM9000_ISR) >> 6;	/* ISR bit7:6 keeps I/O mode */
 
-	db->io_data = ioremap(db->data_res->start, iosize);
+	/* GPIO0 on pre-activate PHY */
+	iow(db, DM9000_GPR, 0);	/* REG_1F bit0 activate phyxcer */
+	iow(db, DM9000_GPCR, GPCR_GEP_CNTL);	/* Let GPIO0 output */
+	iow(db, DM9000_GPR, 0);	/* Enable PHY */
 
-	if (db->io_data == NULL) {
-		dev_err(db->dev, "failed to ioremap data reg\n");
-		ret = -EINVAL;
-		goto out;
-	}
-
-	/* fill in parameters for net-dev structure */
-	ndev->base_addr = (unsigned long)db->io_addr;
-	ndev->irq	= db->irq_res->start;
-
-	/* ensure at least we have a default set of IO routines */
-	dm9000_set_io(db, iosize);
-
-	/* check to see if anything is being over-ridden */
-	if (pdata != NULL) {
-		/* check to see if the driver wants to over-ride the
-		 * default IO width */
-
-		if (pdata->flags & DM9000_PLATF_8BITONLY)
-			dm9000_set_io(db, 1);
-
-		if (pdata->flags & DM9000_PLATF_16BITONLY)
-			dm9000_set_io(db, 2);
-
-		if (pdata->flags & DM9000_PLATF_32BITONLY)
-			dm9000_set_io(db, 4);
-
-		/* check to see if there are any IO routine
-		 * over-rides */
-
-		if (pdata->inblk != NULL)
-			db->inblk = pdata->inblk;
-
-		if (pdata->outblk != NULL)
-			db->outblk = pdata->outblk;
-
-		if (pdata->dumpblk != NULL)
-			db->dumpblk = pdata->dumpblk;
-
-		db->flags = pdata->flags;
-	}
-
-	dm9000_reset(db);
-
-	/* try multiple times, DM9000 sometimes gets the read wrong */
-	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;
-		id_val |= (u32)ior(db, DM9000_PIDH) << 24;
-
-		if (id_val == DM9000_ID)
-			break;
-		dev_err(db->dev, "read wrong id 0x%08x\n", id_val);
-	}
-
-	if (id_val != DM9000_ID) {
-		dev_err(db->dev, "wrong id: 0x%08x\n", id_val);
-		ret = -ENODEV;
-		goto out;
-	}
-
-	/* Identify what type of DM9000 we are working on */
-
-	id_val = ior(db, DM9000_CHIPR);
-	dev_dbg(db->dev, "dm9000 revision 0x%02x\n", id_val);
-
-	switch (id_val) {
-	case CHIPR_DM9000A:
-		db->type = TYPE_DM9000A;
-		break;
-	case CHIPR_DM9000B:
-		db->type = TYPE_DM9000B;
-		break;
-	default:
-		dev_dbg(db->dev, "ID %02x => defaulting to DM9000E\n", id_val);
-		db->type = TYPE_DM9000E;
-	}
-
-	/* from this point we assume that we have found a DM9000 */
-
-	/* driver system function */
-	ether_setup(ndev);
-
-	ndev->open		 = &dm9000_open;
-	ndev->hard_start_xmit    = &dm9000_start_xmit;
-	ndev->tx_timeout         = &dm9000_timeout;
-	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
-
-	db->msg_enable       = NETIF_MSG_LINK;
-	db->mii.phy_id_mask  = 0x1f;
-	db->mii.reg_num_mask = 0x1f;
-	db->mii.force_media  = 0;
-	db->mii.full_duplex  = 0;
-	db->mii.dev	     = ndev;
-	db->mii.mdio_read    = dm9000_phy_read;
-	db->mii.mdio_write   = dm9000_phy_write;
-
-	mac_src = "eeprom";
-
-	/* 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))
-		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(KERN_INFO "%s: dm9000%c at %p,%p IRQ %d MAC: %s (%s)\n",
-		       ndev->name, dm9000_type_to_char(db->type),
-		       db->io_addr, db->io_data, ndev->irq,
-		       print_mac(mac, ndev->dev_addr), mac_src);
-	}
-	return 0;
-
-out:
-	dev_err(db->dev, "not found (%d).\n", ret);
-
-	dm9000_release_board(pdev, db);
-	free_netdev(ndev);
-
-	return ret;
-}
-
-/*
- *  Open the interface.
- *  The interface is opened whenever "ifconfig" actives it.
- */
-static int
-dm9000_open(struct net_device *dev)
-{
-	board_info_t *db = dev->priv;
-	unsigned long irqflags = db->irq_res->flags & IRQF_TRIGGER_MASK;
-
-	if (netif_msg_ifup(db))
-		dev_dbg(db->dev, "enabling %s\n", dev->name);
-
-	/* 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 */
-	dm9000_reset(db);
-	dm9000_init_dm9000(dev);
-
-	/* Init driver variable */
-	db->dbug_cnt = 0;
-
-	mii_check_media(&db->mii, netif_msg_link(db), 1);
-	netif_start_queue(dev);
-	
-	dm9000_schedule_poll(db);
-
-	return 0;
-}
-
-/*
- * Initilize dm9000 board
- */
-static void
-dm9000_init_dm9000(struct net_device *dev)
-{
-	board_info_t *db = dev->priv;
-	unsigned int imr;
-
-	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 */
-
-	/* GPIO0 on pre-activate PHY */
-	iow(db, DM9000_GPR, 0);	/* REG_1F bit0 activate phyxcer */
-	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);
+	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 */
@@ -843,6 +690,29 @@ dm9000_init_dm9000(struct net_device *dev)
 	dev->trans_start = 0;
 }
 
+/* Our watchdog timed out. Called by the networking layer */
+static void dm9000_timeout(struct net_device *dev)
+{
+	board_info_t *db = (board_info_t *) dev->priv;
+	u8 reg_save;
+	unsigned long flags;
+
+	/* Save previous register address */
+	reg_save = readb(db->io_addr);
+	spin_lock_irqsave(&db->lock, flags);
+
+	netif_stop_queue(dev);
+	dm9000_reset(db);
+	dm9000_init_dm9000(dev);
+	/* We can accept TX packets again */
+	dev->trans_start = jiffies;
+	netif_wake_queue(dev);
+
+	/* Restore previous register address */
+	writeb(reg_save, db->io_addr);
+	spin_unlock_irqrestore(&db->lock, flags);
+}
+
 /*
  *  Hardware start transmission.
  *  Send a packet to media from the upper layer.
@@ -891,60 +761,22 @@ dm9000_start_xmit(struct sk_buff *skb, struct net_device *dev)
 	return 0;
 }
 
-static void
-dm9000_shutdown(struct net_device *dev)
-{
-	board_info_t *db = dev->priv;
-
-	/* RESET device */
-	dm9000_phy_write(dev, 0, MII_BMCR, BMCR_RESET);	/* PHY RESET */
-	iow(db, DM9000_GPR, 0x01);	/* Power-Down PHY */
-	iow(db, DM9000_IMR, IMR_PAR);	/* Disable all interrupt */
-	iow(db, DM9000_RCR, 0x00);	/* Disable RX */
-}
-
 /*
- * Stop the interface.
- * The interface is stopped when it is brought.
+ * DM9000 interrupt handler
+ * receive the packet to upper layer, free the transmitted packet
  */
-static int
-dm9000_stop(struct net_device *ndev)
+
+static void dm9000_tx_done(struct net_device *dev, board_info_t *db)
 {
-	board_info_t *db = ndev->priv;
+	int tx_status = ior(db, DM9000_NSR);	/* Got TX status */
 
-	if (netif_msg_ifdown(db))
-		dev_dbg(db->dev, "shutting down %s\n", ndev->name);
+	if (tx_status & (NSR_TX2END | NSR_TX1END)) {
+		/* One packet sent complete */
+		db->tx_pkt_cnt--;
+		dev->stats.tx_packets++;
 
-	cancel_delayed_work_sync(&db->phy_poll);
-
-	netif_stop_queue(ndev);
-	netif_carrier_off(ndev);
-
-	/* free interrupt */
-	free_irq(ndev->irq, ndev);
-
-	dm9000_shutdown(ndev);
-
-	return 0;
-}
-
-/*
- * DM9000 interrupt handler
- * receive the packet to upper layer, free the transmitted packet
- */
-
-static void
-dm9000_tx_done(struct net_device *dev, board_info_t * db)
-{
-	int tx_status = ior(db, DM9000_NSR);	/* Got TX status */
-
-	if (tx_status & (NSR_TX2END | NSR_TX1END)) {
-		/* One packet sent complete */
-		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);
+		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) {
@@ -957,59 +789,6 @@ dm9000_tx_done(struct net_device *dev, board_info_t * db)
 	}
 }
 
-static irqreturn_t
-dm9000_interrupt(int irq, void *dev_id)
-{
-	struct net_device *dev = dev_id;
-	board_info_t *db = dev->priv;
-	int int_status;
-	u8 reg_save;
-
-	dm9000_dbg(db, 3, "entering %s\n", __func__);
-
-	/* A real interrupt coming */
-
-	spin_lock(&db->lock);
-
-	/* Save previous register address */
-	reg_save = readb(db->io_addr);
-
-	/* Disable all interrupts */
-	iow(db, DM9000_IMR, IMR_PAR);
-
-	/* Got DM9000 interrupt status */
-	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);
-
-	/* Trnasmit Interrupt check */
-	if (int_status & ISR_PTS)
-		dm9000_tx_done(dev, db);
-
-	if (db->type != TYPE_DM9000E) {
-		if (int_status & ISR_LNKCHNG) {
-			/* fire a link-change request */
-			schedule_delayed_work(&db->phy_poll, 1);
-		}
-	}
-
-	/* Re-enable interrupt mask */
-	iow(db, DM9000_IMR, db->imr_all);
-
-	/* Restore previous register address */
-	writeb(reg_save, db->io_addr);
-
-	spin_unlock(&db->lock);
-
-	return IRQ_HANDLED;
-}
-
 struct dm9000_rxhdr {
 	u8	RxPktReady;
 	u8	RxStatus;
@@ -1113,210 +892,148 @@ dm9000_rx(struct net_device *dev)
 	} while (rxbyte == DM9000_PKT_RDY);
 }
 
-static unsigned int
-dm9000_read_locked(board_info_t *db, int reg)
+static irqreturn_t dm9000_interrupt(int irq, void *dev_id)
 {
-	unsigned long flags;
-	unsigned int ret;
+	struct net_device *dev = dev_id;
+	board_info_t *db = dev->priv;
+	int int_status;
+	u8 reg_save;
 
-	spin_lock_irqsave(&db->lock, flags);
-	ret = ior(db, reg);
-	spin_unlock_irqrestore(&db->lock, flags);
+	dm9000_dbg(db, 3, "entering %s\n", __func__);
 
-	return ret;
-}
+	/* A real interrupt coming */
 
-static int dm9000_wait_eeprom(board_info_t *db)
-{
-	unsigned int status;
-	int timeout = 8;	/* wait max 8msec */
+	spin_lock(&db->lock);
 
-	/* 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.
-	 */
+	/* Save previous register address */
+	reg_save = readb(db->io_addr);
 
-	while (1) {
-		status = dm9000_read_locked(db, DM9000_EPCR);
+	/* Disable all interrupts */
+	iow(db, DM9000_IMR, IMR_PAR);
 
-		if ((status & EPCR_ERRE) == 0)
-			break;
+	/* Got DM9000 interrupt status */
+	int_status = ior(db, DM9000_ISR);	/* Got ISR */
+	iow(db, DM9000_ISR, int_status);	/* Clear ISR status */
 
-		if (timeout-- < 0) {
-			dev_dbg(db->dev, "timeout waiting EEPROM\n");
-			break;
+	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);
+
+	/* Trnasmit Interrupt check */
+	if (int_status & ISR_PTS)
+		dm9000_tx_done(dev, db);
+
+	if (db->type != TYPE_DM9000E) {
+		if (int_status & ISR_LNKCHNG) {
+			/* fire a link-change request */
+			schedule_delayed_work(&db->phy_poll, 1);
 		}
 	}
 
-	return 0;
+	/* Re-enable interrupt mask */
+	iow(db, DM9000_IMR, db->imr_all);
+
+	/* Restore previous register address */
+	writeb(reg_save, db->io_addr);
+
+	spin_unlock(&db->lock);
+
+	return IRQ_HANDLED;
 }
 
+#ifdef CONFIG_NET_POLL_CONTROLLER
 /*
- *  Read a word data from EEPROM
+ *Used by netconsole
  */
-static void
-dm9000_read_eeprom(board_info_t *db, int offset, u8 *to)
+static void dm9000_poll_controller(struct net_device *dev)
 {
-	unsigned long flags;
-
-	if (db->flags & DM9000_PLATF_NO_EEPROM) {
-		to[0] = 0xff;
-		to[1] = 0xff;
-		return;
-	}
-
-	mutex_lock(&db->addr_lock);
+	disable_irq(dev->irq);
+	dm9000_interrupt(dev->irq, dev);
+	enable_irq(dev->irq);
+}
+#endif
 
-	spin_lock_irqsave(&db->lock, flags);
+/*
+ *  Open the interface.
+ *  The interface is opened whenever "ifconfig" actives it.
+ */
+static int
+dm9000_open(struct net_device *dev)
+{
+	board_info_t *db = dev->priv;
+	unsigned long irqflags = db->irq_res->flags & IRQF_TRIGGER_MASK;
 
-	iow(db, DM9000_EPAR, offset);
-	iow(db, DM9000_EPCR, EPCR_ERPRR);
+	if (netif_msg_ifup(db))
+		dev_dbg(db->dev, "enabling %s\n", dev->name);
 
-	spin_unlock_irqrestore(&db->lock, flags);
+	/* If there is no IRQ type specified, default to something that
+	 * may work, and tell the user that this is a problem */
 
-	dm9000_wait_eeprom(db);
+	if (irqflags == IRQF_TRIGGER_NONE) {
+		dev_warn(db->dev, "WARNING: no IRQ resource flags set.\n");
+		irqflags = DEFAULT_TRIGGER;
+	}
+	
+	irqflags |= IRQF_SHARED;
 
-	/* delay for at-least 150uS */
-	msleep(1);
+	if (request_irq(dev->irq, &dm9000_interrupt, irqflags, dev->name, dev))
+		return -EAGAIN;
 
-	spin_lock_irqsave(&db->lock, flags);
+	/* Initialize DM9000 board */
+	dm9000_reset(db);
+	dm9000_init_dm9000(dev);
 
-	iow(db, DM9000_EPCR, 0x0);
+	/* Init driver variable */
+	db->dbug_cnt = 0;
 
-	to[0] = ior(db, DM9000_EPDRL);
-	to[1] = ior(db, DM9000_EPDRH);
+	mii_check_media(&db->mii, netif_msg_link(db), 1);
+	netif_start_queue(dev);
+	
+	dm9000_schedule_poll(db);
 
-	spin_unlock_irqrestore(&db->lock, flags);
+	return 0;
+}
 
-	mutex_unlock(&db->addr_lock);
+/*
+ * 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);
 }
 
 /*
- * Write a word data to SROM
+ *   Read a word from phyxcer
  */
-static void
-dm9000_write_eeprom(board_info_t *db, int offset, u8 *data)
+static int
+dm9000_phy_read(struct net_device *dev, int phy_reg_unused, int reg)
 {
+	board_info_t *db = (board_info_t *) dev->priv;
 	unsigned long flags;
-
-	if (db->flags & DM9000_PLATF_NO_EEPROM)
-		return;
+	unsigned int reg_save;
+	int ret;
 
 	mutex_lock(&db->addr_lock);
 
-	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);
+	spin_lock_irqsave(&db->lock,flags);
 
-	dm9000_wait_eeprom(db);
+	/* Save previous register address */
+	reg_save = readb(db->io_addr);
 
-	mdelay(1);	/* wait at least 150uS to clear */
+	/* Fill the phyxcer register into REG_0C */
+	iow(db, DM9000_EPAR, DM9000_PHY | reg);
 
-	spin_lock_irqsave(&db->lock, flags);
-	iow(db, DM9000_EPCR, 0);
-	spin_unlock_irqrestore(&db->lock, flags);
+	iow(db, DM9000_EPCR, 0xc);	/* Issue phyxcer read command */
 
-	mutex_unlock(&db->addr_lock);
-}
-
-/*
- *  Set DM9000 multicast address
- */
-static void
-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 hash_table[4];
-	u8 rcr = RCR_DIS_LONG | RCR_DIS_CRC | RCR_RXEN;
-	unsigned long flags;
-
-	dm9000_dbg(db, 1, "entering %s\n", __func__);
-
-	spin_lock_irqsave(&db->lock, flags);
-
-	for (i = 0, oft = DM9000_PAR; i < 6; i++, oft++)
-		iow(db, oft, dev->dev_addr[i]);
-
-	/* Clear Hash Table */
-	for (i = 0; i < 4; i++)
-		hash_table[i] = 0x0;
-
-	/* broadcast address */
-	hash_table[3] = 0x8000;
-
-	if (dev->flags & IFF_PROMISC)
-		rcr |= RCR_PRMSC;
-
-	if (dev->flags & IFF_ALLMULTI)
-		rcr |= RCR_ALL;
-
-	/* the multicast address in Hash Table : 64 bits */
-	for (i = 0; i < mc_cnt; i++, mcptr = mcptr->next) {
-		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 = DM9000_MAR; i < 4; i++) {
-		iow(db, oft++, hash_table[i]);
-		iow(db, oft++, hash_table[i] >> 8);
-	}
-
-	iow(db, DM9000_RCR, rcr);
-	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
-dm9000_phy_read(struct net_device *dev, int phy_reg_unused, int reg)
-{
-	board_info_t *db = (board_info_t *) dev->priv;
-	unsigned long flags;
-	unsigned int reg_save;
-	int ret;
-
-	mutex_lock(&db->addr_lock);
-
-	spin_lock_irqsave(&db->lock,flags);
-
-	/* Save previous register address */
-	reg_save = readb(db->io_addr);
-
-	/* Fill the phyxcer register into REG_0C */
-	iow(db, DM9000_EPAR, DM9000_PHY | reg);
-
-	iow(db, DM9000_EPCR, 0xc);	/* Issue phyxcer read command */
-
-	writeb(reg_save, db->io_addr);
-	spin_unlock_irqrestore(&db->lock,flags);
+	writeb(reg_save, db->io_addr);
+	spin_unlock_irqrestore(&db->lock,flags);
 
 	dm9000_msleep(db, 1);		/* Wait read complete */
 
@@ -1383,6 +1100,269 @@ dm9000_phy_write(struct net_device *dev,
 	mutex_unlock(&db->addr_lock);
 }
 
+static void
+dm9000_shutdown(struct net_device *dev)
+{
+	board_info_t *db = dev->priv;
+
+	/* RESET device */
+	dm9000_phy_write(dev, 0, MII_BMCR, BMCR_RESET);	/* PHY RESET */
+	iow(db, DM9000_GPR, 0x01);	/* Power-Down PHY */
+	iow(db, DM9000_IMR, IMR_PAR);	/* Disable all interrupt */
+	iow(db, DM9000_RCR, 0x00);	/* Disable RX */
+}
+
+/*
+ * Stop the interface.
+ * The interface is stopped when it is brought.
+ */
+static int
+dm9000_stop(struct net_device *ndev)
+{
+	board_info_t *db = ndev->priv;
+
+	if (netif_msg_ifdown(db))
+		dev_dbg(db->dev, "shutting down %s\n", ndev->name);
+
+	cancel_delayed_work_sync(&db->phy_poll);
+
+	netif_stop_queue(ndev);
+	netif_carrier_off(ndev);
+
+	/* free interrupt */
+	free_irq(ndev->irq, ndev);
+
+	dm9000_shutdown(ndev);
+
+	return 0;
+}
+
+#define res_size(_r) (((_r)->end - (_r)->start) + 1)
+
+/*
+ * Search DM9000 board, allocate space and register it
+ */
+static int __devinit
+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;
+	int ret = 0;
+	int iosize;
+	int i;
+	u32 id_val;
+
+	/* Init network device */
+	ndev = alloc_etherdev(sizeof(struct board_info));
+	if (!ndev) {
+		dev_err(&pdev->dev, "could not allocate device.\n");
+		return -ENOMEM;
+	}
+
+	SET_NETDEV_DEV(ndev, &pdev->dev);
+
+	dev_dbg(&pdev->dev, "dm9000_probe()\n");
+
+	/* setup board info structure */
+	db = ndev->priv;
+	memset(db, 0, sizeof(*db));
+
+	db->dev = &pdev->dev;
+	db->ndev = ndev;
+
+	spin_lock_init(&db->lock);
+	mutex_init(&db->addr_lock);
+
+	INIT_DELAYED_WORK(&db->phy_poll, dm9000_poll_work);
+
+	db->addr_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	db->data_res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
+	db->irq_res  = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
+
+	if (db->addr_res == NULL || db->data_res == NULL ||
+	    db->irq_res == NULL) {
+		dev_err(db->dev, "insufficient resources\n");
+		ret = -ENOENT;
+		goto out;
+	}
+
+	iosize = res_size(db->addr_res);
+	db->addr_req = request_mem_region(db->addr_res->start, iosize,
+					  pdev->name);
+
+	if (db->addr_req == NULL) {
+		dev_err(db->dev, "cannot claim address reg area\n");
+		ret = -EIO;
+		goto out;
+	}
+
+	db->io_addr = ioremap(db->addr_res->start, iosize);
+
+	if (db->io_addr == NULL) {
+		dev_err(db->dev, "failed to ioremap address reg\n");
+		ret = -EINVAL;
+		goto out;
+	}
+
+	iosize = res_size(db->data_res);
+	db->data_req = request_mem_region(db->data_res->start, iosize,
+					  pdev->name);
+
+	if (db->data_req == NULL) {
+		dev_err(db->dev, "cannot claim data reg area\n");
+		ret = -EIO;
+		goto out;
+	}
+
+	db->io_data = ioremap(db->data_res->start, iosize);
+
+	if (db->io_data == NULL) {
+		dev_err(db->dev, "failed to ioremap data reg\n");
+		ret = -EINVAL;
+		goto out;
+	}
+
+	/* fill in parameters for net-dev structure */
+	ndev->base_addr = (unsigned long)db->io_addr;
+	ndev->irq	= db->irq_res->start;
+
+	/* ensure at least we have a default set of IO routines */
+	dm9000_set_io(db, iosize);
+
+	/* check to see if anything is being over-ridden */
+	if (pdata != NULL) {
+		/* check to see if the driver wants to over-ride the
+		 * default IO width */
+
+		if (pdata->flags & DM9000_PLATF_8BITONLY)
+			dm9000_set_io(db, 1);
+
+		if (pdata->flags & DM9000_PLATF_16BITONLY)
+			dm9000_set_io(db, 2);
+
+		if (pdata->flags & DM9000_PLATF_32BITONLY)
+			dm9000_set_io(db, 4);
+
+		/* check to see if there are any IO routine
+		 * over-rides */
+
+		if (pdata->inblk != NULL)
+			db->inblk = pdata->inblk;
+
+		if (pdata->outblk != NULL)
+			db->outblk = pdata->outblk;
+
+		if (pdata->dumpblk != NULL)
+			db->dumpblk = pdata->dumpblk;
+
+		db->flags = pdata->flags;
+	}
+
+	dm9000_reset(db);
+
+	/* try multiple times, DM9000 sometimes gets the read wrong */
+	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;
+		id_val |= (u32)ior(db, DM9000_PIDH) << 24;
+
+		if (id_val == DM9000_ID)
+			break;
+		dev_err(db->dev, "read wrong id 0x%08x\n", id_val);
+	}
+
+	if (id_val != DM9000_ID) {
+		dev_err(db->dev, "wrong id: 0x%08x\n", id_val);
+		ret = -ENODEV;
+		goto out;
+	}
+
+	/* Identify what type of DM9000 we are working on */
+
+	id_val = ior(db, DM9000_CHIPR);
+	dev_dbg(db->dev, "dm9000 revision 0x%02x\n", id_val);
+
+	switch (id_val) {
+	case CHIPR_DM9000A:
+		db->type = TYPE_DM9000A;
+		break;
+	case CHIPR_DM9000B:
+		db->type = TYPE_DM9000B;
+		break;
+	default:
+		dev_dbg(db->dev, "ID %02x => defaulting to DM9000E\n", id_val);
+		db->type = TYPE_DM9000E;
+	}
+
+	/* from this point we assume that we have found a DM9000 */
+
+	/* driver system function */
+	ether_setup(ndev);
+
+	ndev->open		 = &dm9000_open;
+	ndev->hard_start_xmit    = &dm9000_start_xmit;
+	ndev->tx_timeout         = &dm9000_timeout;
+	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
+
+	db->msg_enable       = NETIF_MSG_LINK;
+	db->mii.phy_id_mask  = 0x1f;
+	db->mii.reg_num_mask = 0x1f;
+	db->mii.force_media  = 0;
+	db->mii.full_duplex  = 0;
+	db->mii.dev	     = ndev;
+	db->mii.mdio_read    = dm9000_phy_read;
+	db->mii.mdio_write   = dm9000_phy_write;
+
+	mac_src = "eeprom";
+
+	/* 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))
+		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(KERN_INFO "%s: dm9000%c at %p,%p IRQ %d MAC: %s (%s)\n",
+		       ndev->name, dm9000_type_to_char(db->type),
+		       db->io_addr, db->io_data, ndev->irq,
+		       print_mac(mac, ndev->dev_addr), mac_src);
+	}
+	return 0;
+
+out:
+	dev_err(db->dev, "not found (%d).\n", ret);
+
+	dm9000_release_board(pdev, db);
+	free_netdev(ndev);
+
+	return ret;
+}
+
 static int
 dm9000_drv_suspend(struct platform_device *dev, pm_message_t state)
 {
-- 
cgit v1.2.3


From aa1eb452e8d8a97ee65ace0054e7a733ae12cf6d Mon Sep 17 00:00:00 2001
From: Ben Dooks <ben-linux@fluff.org>
Date: Tue, 24 Jun 2008 22:16:03 +0100
Subject: DM9000: Use NSR to determine link-status on internal PHY

The DM9000_NSR register contains a copy of the internal PHY's
link status which we can use to determine if the link is up
or down. This eliminates the more costly (and sleeping) PHY
read when using the DM9000's own PHY.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
---
 drivers/net/dm9000.c | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

(limited to 'drivers/net/dm9000.c')

diff --git a/drivers/net/dm9000.c b/drivers/net/dm9000.c
index 679c291107f5..7c38f6129b55 100644
--- a/drivers/net/dm9000.c
+++ b/drivers/net/dm9000.c
@@ -473,7 +473,14 @@ static int dm9000_nway_reset(struct net_device *dev)
 static u32 dm9000_get_link(struct net_device *dev)
 {
 	board_info_t *dm = to_dm9000_board(dev);
-	return mii_link_ok(&dm->mii);
+	u32 ret;
+
+	if (dm->flags & DM9000_PLATF_EXT_PHY)
+		ret = mii_link_ok(&dm->mii);
+	else
+		ret = dm9000_read_locked(dm, DM9000_NSR) & NSR_LINKST ? 1 : 0;
+
+	return ret;
 }
 
 #define DM_EEPROM_MAGIC		(0x444D394B)
-- 
cgit v1.2.3


From f8dd0ecbb74d4b220b105d77c0633945ebb5453e Mon Sep 17 00:00:00 2001
From: Ben Dooks <ben-linux@fluff.org>
Date: Tue, 24 Jun 2008 22:16:04 +0100
Subject: DM9000: Allow the use of the NSR register to get link status.

The DM9000's internal PHY reports a copy of the link status
in the NSR register of the chip. Reading the status when
polling for link status is faster as it eliminates the need
to sleep, but does not print as much information.

Add an platform flag to force this behaviour, and a Kconfig
option to allow it to be forced to the faster method always.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
---
 drivers/net/Kconfig    |  9 +++++++++
 drivers/net/dm9000.c   | 41 +++++++++++++++++++++++++++++++++++++++--
 include/linux/dm9000.h |  1 +
 3 files changed, 49 insertions(+), 2 deletions(-)

(limited to 'drivers/net/dm9000.c')

diff --git a/drivers/net/Kconfig b/drivers/net/Kconfig
index 287d0873c60d..4d69474b6125 100644
--- a/drivers/net/Kconfig
+++ b/drivers/net/Kconfig
@@ -938,6 +938,15 @@ config DM9000
 	  To compile this driver as a module, choose M here.  The module
 	  will be called dm9000.
 
+config DM9000_FORCE_SIMPLE_PHY_POLL
+	bool "Force simple NSR based PHY polling"
+	depends on DM9000
+	---help---
+	  This configuration forces the DM9000 to use the NSR's LinkStatus
+	  bit to determine if the link is up or down instead of the more
+	  costly MII PHY reads. Note, this will not work if the chip is
+	  operating with an external PHY.
+
 config ENC28J60
 	tristate "ENC28J60 support"
 	depends on EXPERIMENTAL && SPI && NET_ETHERNET
diff --git a/drivers/net/dm9000.c b/drivers/net/dm9000.c
index 7c38f6129b55..5ad2ec537684 100644
--- a/drivers/net/dm9000.c
+++ b/drivers/net/dm9000.c
@@ -552,15 +552,48 @@ static const struct ethtool_ops dm9000_ethtool_ops = {
  	.set_eeprom		= dm9000_set_eeprom,
 };
 
+static void dm9000_show_carrier(board_info_t *db,
+				unsigned carrier, unsigned nsr)
+{
+	struct net_device *ndev = db->ndev;
+	unsigned ncr = dm9000_read_locked(db, DM9000_NCR);
+
+	if (carrier)
+		dev_info(db->dev, "%s: link up, %dMbps, %s-duplex, no LPA\n",
+			 ndev->name, (nsr & NSR_SPEED) ? 10 : 100,
+			 (ncr & NCR_FDX) ? "full" : "half");
+	else
+		dev_info(db->dev, "%s: link down\n", ndev->name);
+}
+
 static void
 dm9000_poll_work(struct work_struct *w)
 {
 	struct delayed_work *dw = container_of(w, struct delayed_work, work);
 	board_info_t *db = container_of(dw, board_info_t, phy_poll);
+	struct net_device *ndev = db->ndev;
+
+	if (db->flags & DM9000_PLATF_SIMPLE_PHY &&
+	    !(db->flags & DM9000_PLATF_EXT_PHY)) {
+		unsigned nsr = dm9000_read_locked(db, DM9000_NSR);
+		unsigned old_carrier = netif_carrier_ok(ndev) ? 1 : 0;
+		unsigned new_carrier;
 
-	mii_check_media(&db->mii, netif_msg_link(db), 0);
+		new_carrier = (nsr & NSR_LINKST) ? 1 : 0;
+
+		if (old_carrier != new_carrier) {
+			if (netif_msg_link(db))
+				dm9000_show_carrier(db, new_carrier, nsr);
+
+			if (!new_carrier)
+				netif_carrier_off(ndev);
+			else
+				netif_carrier_on(ndev);
+		}
+	} else
+		mii_check_media(&db->mii, netif_msg_link(db), 0);
 	
-	if (netif_running(db->ndev))
+	if (netif_running(ndev))
 		dm9000_schedule_poll(db);
 }
 
@@ -1267,6 +1300,10 @@ dm9000_probe(struct platform_device *pdev)
 		db->flags = pdata->flags;
 	}
 
+#ifdef CONFIG_DM9000_FORCE_SIMPLE_PHY_POLL
+	db->flags |= DM9000_PLATF_SIMPLE_PHY;
+#endif
+
 	dm9000_reset(db);
 
 	/* try multiple times, DM9000 sometimes gets the read wrong */
diff --git a/include/linux/dm9000.h b/include/linux/dm9000.h
index a3750462f9e3..fc82446b6425 100644
--- a/include/linux/dm9000.h
+++ b/include/linux/dm9000.h
@@ -21,6 +21,7 @@
 #define DM9000_PLATF_32BITONLY	(0x0004)
 #define DM9000_PLATF_EXT_PHY	(0x0008)
 #define DM9000_PLATF_NO_EEPROM	(0x0010)
+#define DM9000_PLATF_SIMPLE_PHY (0x0020)  /* Use NSR to find LinkStatus */
 
 /* platfrom data for platfrom device structure's platfrom_data field */
 
-- 
cgit v1.2.3


From 2fcf06ca67d1cd5fcf748b3f70ef9e724951fab4 Mon Sep 17 00:00:00 2001
From: Ben Dooks <ben-linux@fluff.org>
Date: Tue, 24 Jun 2008 22:16:05 +0100
Subject: DM9000: Add missing msleep() in EEPROM wait code.

The msleep() call in the code that checks for the
EEPROM controller's busy status was missing.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
---
 drivers/net/dm9000.c | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'drivers/net/dm9000.c')

diff --git a/drivers/net/dm9000.c b/drivers/net/dm9000.c
index 5ad2ec537684..92233400e6f9 100644
--- a/drivers/net/dm9000.c
+++ b/drivers/net/dm9000.c
@@ -343,6 +343,8 @@ static int dm9000_wait_eeprom(board_info_t *db)
 		if ((status & EPCR_ERRE) == 0)
 			break;
 
+		msleep(1);
+
 		if (timeout-- < 0) {
 			dev_dbg(db->dev, "timeout waiting EEPROM\n");
 			break;
-- 
cgit v1.2.3


From 6ff4ff06d2b6e4cfd4767ef03675cd3c7c70eaa0 Mon Sep 17 00:00:00 2001
From: Ben Dooks <ben-linux@fluff.org>
Date: Tue, 24 Jun 2008 22:16:07 +0100
Subject: DM9000: Remove DEFAULT_TRIGGER for request_irq() flags.

Currently all but one user (AT91SAM9261EK) of the dm9000
driver passes their IRQ flags through the resources attached
to the platform device. This means we can remove the use
of DEFAULT_TRIGGER as the blackfin machines all seem to
have their triggers set properly.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
---
 drivers/net/dm9000.c | 9 ++-------
 1 file changed, 2 insertions(+), 7 deletions(-)

(limited to 'drivers/net/dm9000.c')

diff --git a/drivers/net/dm9000.c b/drivers/net/dm9000.c
index 92233400e6f9..952e10d686ec 100644
--- a/drivers/net/dm9000.c
+++ b/drivers/net/dm9000.c
@@ -54,9 +54,6 @@
 #define writesb	outsb
 #define writesw	outsw
 #define writesl	outsl
-#define DEFAULT_TRIGGER IRQF_TRIGGER_HIGH
-#else
-#define DEFAULT_TRIGGER (0)
 #endif
 
 /*
@@ -1014,11 +1011,9 @@ dm9000_open(struct net_device *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) {
+	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))
-- 
cgit v1.2.3


From f8e5e776a3ac29705b1a357b23cad0920ef1a1d2 Mon Sep 17 00:00:00 2001
From: Ben Dooks <ben-linux@fluff.org>
Date: Thu, 17 Jul 2008 20:29:13 +0100
Subject: DM9000: Remove magic numbers

Remove magic numbers for items that we already have
defined in the register header file.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
---
 drivers/net/dm9000.c | 15 +++++++++------
 1 file changed, 9 insertions(+), 6 deletions(-)

(limited to 'drivers/net/dm9000.c')

diff --git a/drivers/net/dm9000.c b/drivers/net/dm9000.c
index 952e10d686ec..0b0f1c407a7e 100644
--- a/drivers/net/dm9000.c
+++ b/drivers/net/dm9000.c
@@ -888,19 +888,22 @@ dm9000_rx(struct net_device *dev)
 			dev_dbg(db->dev, "RST: RX Len:%x\n", RxLen);
 		}
 
-		if (rxhdr.RxStatus & 0xbf) {
+		/* rxhdr.RxStatus is identical to RSR register. */
+		if (rxhdr.RxStatus & (RSR_FOE | RSR_CE | RSR_AE |
+				      RSR_PLE | RSR_RWTO |
+				      RSR_LCS | RSR_RF)) {
 			GoodPacket = false;
-			if (rxhdr.RxStatus & 0x01) {
+			if (rxhdr.RxStatus & RSR_FOE) {
 				if (netif_msg_rx_err(db))
 					dev_dbg(db->dev, "fifo error\n");
 				dev->stats.rx_fifo_errors++;
 			}
-			if (rxhdr.RxStatus & 0x02) {
+			if (rxhdr.RxStatus & RSR_CE) {
 				if (netif_msg_rx_err(db))
 					dev_dbg(db->dev, "crc error\n");
 				dev->stats.rx_crc_errors++;
 			}
-			if (rxhdr.RxStatus & 0x80) {
+			if (rxhdr.RxStatus & RSR_RF) {
 				if (netif_msg_rx_err(db))
 					dev_dbg(db->dev, "length error\n");
 				dev->stats.rx_length_errors++;
@@ -1067,7 +1070,7 @@ dm9000_phy_read(struct net_device *dev, int phy_reg_unused, int reg)
 	/* Fill the phyxcer register into REG_0C */
 	iow(db, DM9000_EPAR, DM9000_PHY | reg);
 
-	iow(db, DM9000_EPCR, 0xc);	/* Issue phyxcer read command */
+	iow(db, DM9000_EPCR, EPCR_ERPRR | EPCR_EPOS);	/* Issue phyxcer read command */
 
 	writeb(reg_save, db->io_addr);
 	spin_unlock_irqrestore(&db->lock,flags);
@@ -1118,7 +1121,7 @@ dm9000_phy_write(struct net_device *dev,
 	iow(db, DM9000_EPDRL, value);
 	iow(db, DM9000_EPDRH, value >> 8);
 
-	iow(db, DM9000_EPCR, 0xa);	/* Issue phyxcer write command */
+	iow(db, DM9000_EPCR, EPCR_EPOS | EPCR_ERPRW);	/* Issue phyxcer write command */
 
 	writeb(reg_save, db->io_addr);
 	spin_unlock_irqrestore(&db->lock, flags);
-- 
cgit v1.2.3


From fe414248551e2880fe8913577699003ff145ab9d Mon Sep 17 00:00:00 2001
From: Laurent Pinchart <laurentp@cse-semaphore.com>
Date: Wed, 23 Jul 2008 17:41:52 +0200
Subject: dm9000: Support MAC address setting through platform data.

The dm9000 driver reads the chip's MAC address from the attached EEPROM. When
no EEPROM is present, or when the MAC address is invalid, it falls back to
reading the address from the chip.

This patch lets platform code set the desired MAC address through platform
data.

Signed-off-by: Laurent Pinchart <laurentp@cse-semaphore.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
---
 drivers/net/dm9000.c   | 5 +++++
 include/linux/dm9000.h | 1 +
 2 files changed, 6 insertions(+)

(limited to 'drivers/net/dm9000.c')

diff --git a/drivers/net/dm9000.c b/drivers/net/dm9000.c
index 0b0f1c407a7e..f42c23f42652 100644
--- a/drivers/net/dm9000.c
+++ b/drivers/net/dm9000.c
@@ -1374,6 +1374,11 @@ dm9000_probe(struct platform_device *pdev)
 	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) && pdata != NULL) {
+		mac_src = "platform data";
+		memcpy(ndev->dev_addr, pdata->dev_addr, 6);
+	}
+
 	if (!is_valid_ether_addr(ndev->dev_addr)) {
 		/* try reading from mac */
 		
diff --git a/include/linux/dm9000.h b/include/linux/dm9000.h
index fc82446b6425..c30879cf93bc 100644
--- a/include/linux/dm9000.h
+++ b/include/linux/dm9000.h
@@ -27,6 +27,7 @@
 
 struct dm9000_plat_data {
 	unsigned int	flags;
+	unsigned char	dev_addr[6];
 
 	/* allow replacement IO routines */
 
-- 
cgit v1.2.3