// SPDX-License-Identifier: GPL-2.0+
/*
- dm9000.c: Version 1.2 12/15/2003
-
- A Davicom DM9000 ISA NIC fast Ethernet driver for Linux.
- Copyright (C) 1997 Sten Wang
-
- (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.
-
---------------------------------------
-
- 12/15/2003 Initial port to u-boot by
- Sascha Hauer <saschahauer@web.de>
-
- 06/03/2008 Remy Bohmer <linux@bohmer.net>
- - Fixed the driver to work with DM9000A.
- (check on ISR receive status bit before reading the
- FIFO as described in DM9000 programming guide and
- application notes)
- - Added autodetect of databus width.
- - Made debug code compile again.
- - Adapt eth_send such that it matches the DM9000*
- application notes. Needed to make it work properly
- for DM9000A.
- - Adapted reset procedure to match DM9000 application
- notes (i.e. double reset)
- - some minor code cleanups
- These changes are tested with DM9000{A,EP,E} together
- with a 200MHz Atmel AT91SAM9261 core
-
-TODO: external MII is not functional, only internal at the moment.
-*/
+ * dm9000.c: Version 1.2 12/15/2003
+ *
+ * A Davicom DM9000 ISA NIC fast Ethernet driver for Linux.
+ * Copyright (C) 1997 Sten Wang
+ *
+ * (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.
+ *
+ * --------------------------------------
+ *
+ * 12/15/2003 Initial port to u-boot by
+ * Sascha Hauer <saschahauer@web.de>
+ *
+ * 06/03/2008 Remy Bohmer <linux@bohmer.net>
+ * - Fixed the driver to work with DM9000A.
+ * (check on ISR receive status bit before reading the
+ * FIFO as described in DM9000 programming guide and
+ * application notes)
+ * - Added autodetect of databus width.
+ * - Made debug code compile again.
+ * - Adapt eth_send such that it matches the DM9000*
+ * application notes. Needed to make it work properly
+ * for DM9000A.
+ * - Adapted reset procedure to match DM9000 application
+ * notes (i.e. double reset)
+ * - some minor code cleanups
+ * These changes are tested with DM9000{A,EP,E} together
+ * with a 200MHz Atmel AT91SAM9261 core
+ *
+ * TODO: external MII is not functional, only internal at the moment.
+ */
#include <common.h>
#include <command.h>
#include "dm9000x.h"
/* Structure/enum declaration ------------------------------- */
-typedef struct board_info {
+struct board_info {
u32 runt_length_counter; /* counter: RX length < 64byte */
u32 long_length_counter; /* counter: RX length > 1514byte */
u32 reset_counter; /* counter: RESET */
void (*inblk)(void *data_ptr, int count);
void (*rx_status)(u16 *rxstatus, u16 *rxlen);
struct eth_device netdev;
-} board_info_t;
-static board_info_t dm9000_info;
+};
+static struct board_info dm9000_info;
/* function declaration ------------------------------------- */
static int dm9000_probe(void);
/* DM9000 network board routine ---------------------------- */
#ifndef CONFIG_DM9000_BYTE_SWAPPED
-#define dm9000_outb(d,r) writeb((d), (r))
-#define dm9000_outw(d,r) writew((d), (r))
-#define dm9000_outl(d,r) writel((d), (r))
+#define dm9000_outb(d, r) writeb((d), (r))
+#define dm9000_outw(d, r) writew((d), (r))
+#define dm9000_outl(d, r) writel((d), (r))
#define dm9000_inb(r) readb(r)
#define dm9000_inw(r) readw(r)
#define dm9000_inl(r) readl(r)
static void dm9000_outblk_8bit(void *data_ptr, int count)
{
int i;
+
for (i = 0; i < count; i++)
- dm9000_outb((((u8 *) data_ptr)[i] & 0xff), DM9000_DATA);
+ dm9000_outb((((u8 *)data_ptr)[i] & 0xff), DM9000_DATA);
}
static void dm9000_outblk_16bit(void *data_ptr, int count)
u32 tmplen = (count + 1) / 2;
for (i = 0; i < tmplen; i++)
- dm9000_outw(((u16 *) data_ptr)[i], DM9000_DATA);
+ dm9000_outw(((u16 *)data_ptr)[i], DM9000_DATA);
}
+
static void dm9000_outblk_32bit(void *data_ptr, int count)
{
int i;
u32 tmplen = (count + 3) / 4;
for (i = 0; i < tmplen; i++)
- dm9000_outl(((u32 *) data_ptr)[i], DM9000_DATA);
+ dm9000_outl(((u32 *)data_ptr)[i], DM9000_DATA);
}
static void dm9000_inblk_8bit(void *data_ptr, int count)
{
int i;
+
for (i = 0; i < count; i++)
- ((u8 *) data_ptr)[i] = dm9000_inb(DM9000_DATA);
+ ((u8 *)data_ptr)[i] = dm9000_inb(DM9000_DATA);
}
static void dm9000_inblk_16bit(void *data_ptr, int count)
u32 tmplen = (count + 1) / 2;
for (i = 0; i < tmplen; i++)
- ((u16 *) data_ptr)[i] = dm9000_inw(DM9000_DATA);
+ ((u16 *)data_ptr)[i] = dm9000_inw(DM9000_DATA);
}
+
static void dm9000_inblk_32bit(void *data_ptr, int count)
{
int i;
u32 tmplen = (count + 3) / 4;
for (i = 0; i < tmplen; i++)
- ((u32 *) data_ptr)[i] = dm9000_inl(DM9000_DATA);
+ ((u32 *)data_ptr)[i] = dm9000_inl(DM9000_DATA);
}
static void dm9000_rx_status_32bit(u16 *rxstatus, u16 *rxlen)
}
/*
- Search DM9000 board, allocate space and register it
-*/
+ * Search DM9000 board, allocate space and register it
+ */
int
dm9000_probe(void)
{
u32 id_val;
+
id_val = dm9000_ior(DM9000_VIDL);
id_val |= dm9000_ior(DM9000_VIDH) << 8;
id_val |= dm9000_ior(DM9000_PIDL) << 16;
id_val |= dm9000_ior(DM9000_PIDH) << 24;
- if (id_val == DM9000_ID) {
- printf("dm9000 i/o: 0x%x, id: 0x%x \n", CONFIG_DM9000_BASE,
- id_val);
- return 0;
- } else {
+ if (id_val != DM9000_ID) {
printf("dm9000 not found at 0x%08x id: 0x%08x\n",
CONFIG_DM9000_BASE, id_val);
return -1;
}
+
+ printf("dm9000 i/o: 0x%x, id: 0x%x\n", CONFIG_DM9000_BASE, id_val);
+ return 0;
}
/* General Purpose dm9000 reset routine */
{
debug("resetting DM9000\n");
- /* Reset DM9000,
- see DM9000 Application Notes V1.22 Jun 11, 2004 page 29 */
+ /*
+ * Reset DM9000,
+ * see DM9000 Application Notes V1.22 Jun 11, 2004 page 29
+ */
/* DEBUG: Make all GPIO0 outputs, all others inputs */
dm9000_iow(DM9000_GPCR, GPCR_GPIO0_OUT);
printf("ERROR: resetting DM9000 -> not responding\n");
}
-/* Initialize dm9000 board
-*/
+/* Initialize dm9000 board */
static int dm9000_init(struct eth_device *dev, struct bd_info *bd)
{
int i, oft, lnk;
u8 io_mode;
struct board_info *db = &dm9000_info;
- debug("%s\n", __func__);
-
/* RESET device */
dm9000_reset();
dm9000_iow(DM9000_ISR, ISR_ROOS | ISR_ROS | ISR_PTS | ISR_PRS);
printf("MAC: %pM\n", dev->enetaddr);
- if (!is_valid_ethaddr(dev->enetaddr)) {
+ if (!is_valid_ethaddr(dev->enetaddr))
printf("WARNING: Bad MAC address (uninitialized EEPROM?)\n");
- }
/* fill device MAC address registers */
for (i = 0, oft = DM9000_PAR; i < 6; i++, oft++)
}
/*
- Hardware start transmission.
- Send a packet to media from the upper layer.
-*/
+ * Hardware start transmission.
+ * Send a packet to media from the upper layer.
+ */
static int dm9000_send(struct eth_device *netdev, void *packet, int length)
{
int tmo;
struct board_info *db = &dm9000_info;
- dm9000_dump_packet(__func__ , packet, length);
+ dm9000_dump_packet(__func__, packet, length);
dm9000_iow(DM9000_ISR, IMR_PTM); /* Clear Tx bit in ISR */
dm9000_outb(DM9000_MWCMD, DM9000_IO); /* Prepare for TX-data */
/* push the data to the TX-fifo */
- (db->outblk)(packet, length);
+ db->outblk(packet, length);
/* Set TX length to DM9000 */
dm9000_iow(DM9000_TXPLL, length & 0xff);
/* wait for end of transmission */
tmo = get_timer(0) + 5 * CONFIG_SYS_HZ;
- while ( !(dm9000_ior(DM9000_NSR) & (NSR_TX1END | NSR_TX2END)) ||
- !(dm9000_ior(DM9000_ISR) & IMR_PTM) ) {
+ while (!(dm9000_ior(DM9000_NSR) & (NSR_TX1END | NSR_TX2END)) ||
+ !(dm9000_ior(DM9000_ISR) & IMR_PTM)) {
if (get_timer(0) >= tmo) {
printf("transmission timeout\n");
break;
}
/*
- Stop the interface.
- The interface is stopped when it is brought.
-*/
+ * Stop the interface.
+ * The interface is stopped when it is brought.
+ */
static void dm9000_halt(struct eth_device *netdev)
{
- debug("%s\n", __func__);
-
- /* RESET devie */
+ /* RESET device */
dm9000_phy_write(0, 0x8000); /* PHY RESET */
dm9000_iow(DM9000_GPR, 0x01); /* Power-Down PHY */
dm9000_iow(DM9000_IMR, 0x80); /* Disable all interrupt */
}
/*
- Received a packet and pass to upper layer
-*/
+ * Received a packet and pass to upper layer
+ */
static int dm9000_rx(struct eth_device *netdev)
{
u8 rxbyte;
u16 rxstatus, rxlen = 0;
struct board_info *db = &dm9000_info;
- /* Check packet ready or not, we must check
- the ISR status first for DM9000A */
+ /*
+ * Check packet ready or not, we must check
+ * the ISR status first for DM9000A
+ */
if (!(dm9000_ior(DM9000_ISR) & 0x01)) /* Rx-ISR bit must be set. */
return 0;
for (;;) {
dm9000_ior(DM9000_MRCMDX); /* Dummy read */
- /* Get most updated data,
- only look at bits 0:1, See application notes DM9000 */
+ /*
+ * Get most updated data,
+ * only look at bits 0:1, See application notes DM9000
+ */
rxbyte = dm9000_inb(DM9000_DATA) & 0x03;
/* Status check: this byte must be 0 or 1 */
dm9000_iow(DM9000_RCR, 0x00); /* Stop Device */
dm9000_iow(DM9000_ISR, 0x80); /* Stop INT request */
printf("DM9000 error: status check fail: 0x%x\n",
- rxbyte);
+ rxbyte);
return 0;
}
debug("receiving packet\n");
/* A packet ready now & Get status/length */
- (db->rx_status)(&rxstatus, &rxlen);
+ db->rx_status(&rxstatus, &rxlen);
debug("rx status: 0x%04x rx len: %d\n", rxstatus, rxlen);
/* Move data from DM9000 */
/* Read received packet from RX SRAM */
- (db->inblk)(rdptr, rxlen);
+ db->inblk(rdptr, rxlen);
- if ((rxstatus & 0xbf00) || (rxlen < 0x40)
- || (rxlen > DM9000_PKT_MAX)) {
- if (rxstatus & 0x100) {
+ if (rxstatus & 0xbf00 || rxlen < 0x40 ||
+ rxlen > DM9000_PKT_MAX) {
+ if (rxstatus & 0x100)
printf("rx fifo error\n");
- }
- if (rxstatus & 0x200) {
+ if (rxstatus & 0x200)
printf("rx crc error\n");
- }
- if (rxstatus & 0x8000) {
+ if (rxstatus & 0x8000)
printf("rx length error\n");
- }
if (rxlen > DM9000_PKT_MAX) {
printf("rx length too big\n");
dm9000_reset();
}
} else {
- dm9000_dump_packet(__func__ , rdptr, rxlen);
+ dm9000_dump_packet(__func__, rdptr, rxlen);
debug("passing packet to upper layer\n");
net_process_received_packet(net_rx_packets[0], rxlen);
}
/*
- Read a word data from SROM
-*/
+ * Read a word data from SROM
+ */
#if !defined(CONFIG_DM9000_NO_SROM)
void dm9000_read_srom_word(int offset, u8 *to)
{
dm9000_iow(DM9000_EPAR, offset);
dm9000_iow(DM9000_EPCR, 0x4);
- udelay(8000);
+ mdelay(8);
dm9000_iow(DM9000_EPCR, 0x0);
to[0] = dm9000_ior(DM9000_EPDRL);
to[1] = dm9000_ior(DM9000_EPDRH);
dm9000_iow(DM9000_EPDRH, ((val >> 8) & 0xff));
dm9000_iow(DM9000_EPDRL, (val & 0xff));
dm9000_iow(DM9000_EPCR, 0x12);
- udelay(8000);
+ mdelay(8);
dm9000_iow(DM9000_EPCR, 0);
}
-#endif
static void dm9000_get_enetaddr(struct eth_device *dev)
{
-#if !defined(CONFIG_DM9000_NO_SROM)
int i;
+
for (i = 0; i < 3; i++)
dm9000_read_srom_word(i, dev->enetaddr + (2 * i));
-#endif
}
+#else
+static void dm9000_get_enetaddr(struct eth_device *dev) {}
+#endif
/*
- Read a byte from I/O port
-*/
+ * Read a byte from I/O port
+ */
static u8
dm9000_ior(int reg)
{
}
/*
- Write a byte to I/O port
-*/
+ * Write a byte to I/O port
+ */
static void
dm9000_iow(int reg, u8 value)
{
}
/*
- Read a word from phyxcer
-*/
+ * Read a word from phyxcer
+ */
static u16
dm9000_phy_read(int reg)
{
val = (dm9000_ior(DM9000_EPDRH) << 8) | dm9000_ior(DM9000_EPDRL);
/* The read data keeps on REG_0D & REG_0E */
- debug("dm9000_phy_read(0x%x): 0x%x\n", reg, val);
+ debug("%s(0x%x): 0x%x\n", __func__, reg, val);
return val;
}
/*
- Write a word to phyxcer
-*/
+ * Write a word to phyxcer
+ */
static void
dm9000_phy_write(int reg, u16 value)
{
-
/* Fill the phyxcer register into REG_0C */
dm9000_iow(DM9000_EPAR, DM9000_PHY | reg);
dm9000_iow(DM9000_EPCR, 0xa); /* Issue phyxcer write command */
udelay(500); /* Wait write complete */
dm9000_iow(DM9000_EPCR, 0x0); /* Clear phyxcer write command */
- debug("dm9000_phy_write(reg:0x%x, value:0x%x)\n", reg, value);
+ debug("%s(reg:0x%x, value:0x%x)\n", __func__, reg, value);
}
int dm9000_initialize(struct bd_info *bis)
{
- struct eth_device *dev = &(dm9000_info.netdev);
+ struct eth_device *dev = &dm9000_info.netdev;
/* Load MAC address from EEPROM */
dm9000_get_enetaddr(dev);
projects / platform / kernel / u-boot.git / commitdiff