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authorJean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>2007-11-21 21:19:24 +0100
committerJean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>2007-11-25 18:35:17 +0100
commit2439e4bfa111babf4bc07ba20efbf3e36036813e (patch)
tree21e94282acdc681bdde2ccc270bd401254124d00 /drivers/net/dm9000x.c
parent352d259130b349fe9593b8dada641bd78a9659e5 (diff)
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drivers/net : move net drivers to drivers/net
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Diffstat (limited to 'drivers/net/dm9000x.c')
-rw-r--r--drivers/net/dm9000x.c620
1 files changed, 620 insertions, 0 deletions
diff --git a/drivers/net/dm9000x.c b/drivers/net/dm9000x.c
new file mode 100644
index 0000000..6131b5c
--- /dev/null
+++ b/drivers/net/dm9000x.c
@@ -0,0 +1,620 @@
+/*
+ dm9000.c: Version 1.2 12/15/2003
+
+ A Davicom DM9000 ISA NIC fast Ethernet driver for Linux.
+ Copyright (C) 1997 Sten Wang
+
+ This program is free software; you can redistribute it and/or
+ modify it under the terms of the GNU General Public License
+ as published by the Free Software Foundation; either version 2
+ of the License, or (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ 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.
+
+--------------------------------------
+
+ 12/15/2003 Initial port to u-boot by Sascha Hauer <saschahauer@web.de>
+
+TODO: Homerun NIC and longrun NIC are not functional, only internal at the
+ moment.
+*/
+
+#include <common.h>
+#include <command.h>
+#include <net.h>
+#include <asm/io.h>
+
+#ifdef CONFIG_DRIVER_DM9000
+
+#include "dm9000x.h"
+
+/* Board/System/Debug information/definition ---------------- */
+
+#define DM9801_NOISE_FLOOR 0x08
+#define DM9802_NOISE_FLOOR 0x05
+
+/* #define CONFIG_DM9000_DEBUG */
+
+#ifdef CONFIG_DM9000_DEBUG
+#define DM9000_DBG(fmt,args...) printf(fmt ,##args)
+#else /* */
+#define DM9000_DBG(fmt,args...)
+#endif /* */
+enum DM9000_PHY_mode { DM9000_10MHD = 0, DM9000_100MHD =
+ 1, DM9000_10MFD = 4, DM9000_100MFD = 5, DM9000_AUTO =
+ 8, DM9000_1M_HPNA = 0x10
+};
+enum DM9000_NIC_TYPE { FASTETHER_NIC = 0, HOMERUN_NIC = 1, LONGRUN_NIC = 2
+};
+
+/* Structure/enum declaration ------------------------------- */
+typedef struct board_info {
+ u32 runt_length_counter; /* counter: RX length < 64byte */
+ u32 long_length_counter; /* counter: RX length > 1514byte */
+ u32 reset_counter; /* counter: RESET */
+ u32 reset_tx_timeout; /* RESET caused by TX Timeout */
+ u32 reset_rx_status; /* RESET caused by RX Statsus wrong */
+ u16 tx_pkt_cnt;
+ u16 queue_start_addr;
+ u16 dbug_cnt;
+ u8 phy_addr;
+ u8 device_wait_reset; /* device state */
+ u8 nic_type; /* NIC type */
+ unsigned char srom[128];
+} board_info_t;
+board_info_t dmfe_info;
+
+/* For module input parameter */
+static int media_mode = DM9000_AUTO;
+static u8 nfloor = 0;
+
+/* function declaration ------------------------------------- */
+int eth_init(bd_t * bd);
+int eth_send(volatile void *, int);
+int eth_rx(void);
+void eth_halt(void);
+static int dm9000_probe(void);
+static u16 phy_read(int);
+static void phy_write(int, u16);
+u16 read_srom_word(int);
+static u8 DM9000_ior(int);
+static void DM9000_iow(int reg, u8 value);
+
+/* DM9000 network board routine ---------------------------- */
+
+#define DM9000_outb(d,r) ( *(volatile u8 *)r = d )
+#define DM9000_outw(d,r) ( *(volatile u16 *)r = d )
+#define DM9000_outl(d,r) ( *(volatile u32 *)r = d )
+#define DM9000_inb(r) (*(volatile u8 *)r)
+#define DM9000_inw(r) (*(volatile u16 *)r)
+#define DM9000_inl(r) (*(volatile u32 *)r)
+
+#ifdef CONFIG_DM9000_DEBUG
+static void
+dump_regs(void)
+{
+ DM9000_DBG("\n");
+ DM9000_DBG("NCR (0x00): %02x\n", DM9000_ior(0));
+ DM9000_DBG("NSR (0x01): %02x\n", DM9000_ior(1));
+ DM9000_DBG("TCR (0x02): %02x\n", DM9000_ior(2));
+ DM9000_DBG("TSRI (0x03): %02x\n", DM9000_ior(3));
+ DM9000_DBG("TSRII (0x04): %02x\n", DM9000_ior(4));
+ DM9000_DBG("RCR (0x05): %02x\n", DM9000_ior(5));
+ DM9000_DBG("RSR (0x06): %02x\n", DM9000_ior(6));
+ DM9000_DBG("ISR (0xFE): %02x\n", DM9000_ior(ISR));
+ DM9000_DBG("\n");
+}
+#endif /* */
+
+/*
+ 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 {
+ printf("dm9000 not found at 0x%08x id: 0x%08x\n",
+ CONFIG_DM9000_BASE, id_val);
+ return -1;
+ }
+}
+
+/* Set PHY operationg mode
+*/
+static void
+set_PHY_mode(void)
+{
+ u16 phy_reg4 = 0x01e1, phy_reg0 = 0x1000;
+ if (!(media_mode & DM9000_AUTO)) {
+ switch (media_mode) {
+ case DM9000_10MHD:
+ phy_reg4 = 0x21;
+ phy_reg0 = 0x0000;
+ break;
+ case DM9000_10MFD:
+ phy_reg4 = 0x41;
+ phy_reg0 = 0x1100;
+ break;
+ case DM9000_100MHD:
+ phy_reg4 = 0x81;
+ phy_reg0 = 0x2000;
+ break;
+ case DM9000_100MFD:
+ phy_reg4 = 0x101;
+ phy_reg0 = 0x3100;
+ break;
+ }
+ phy_write(4, phy_reg4); /* Set PHY media mode */
+ phy_write(0, phy_reg0); /* Tmp */
+ }
+ DM9000_iow(DM9000_GPCR, 0x01); /* Let GPIO0 output */
+ DM9000_iow(DM9000_GPR, 0x00); /* Enable PHY */
+}
+
+/*
+ Init HomeRun DM9801
+*/
+static void
+program_dm9801(u16 HPNA_rev)
+{
+ __u16 reg16, reg17, reg24, reg25;
+ if (!nfloor)
+ nfloor = DM9801_NOISE_FLOOR;
+ reg16 = phy_read(16);
+ reg17 = phy_read(17);
+ reg24 = phy_read(24);
+ reg25 = phy_read(25);
+ switch (HPNA_rev) {
+ case 0xb900: /* DM9801 E3 */
+ reg16 |= 0x1000;
+ reg25 = ((reg24 + nfloor) & 0x00ff) | 0xf000;
+ break;
+ case 0xb901: /* DM9801 E4 */
+ reg25 = ((reg24 + nfloor) & 0x00ff) | 0xc200;
+ reg17 = (reg17 & 0xfff0) + nfloor + 3;
+ break;
+ case 0xb902: /* DM9801 E5 */
+ case 0xb903: /* DM9801 E6 */
+ default:
+ reg16 |= 0x1000;
+ reg25 = ((reg24 + nfloor - 3) & 0x00ff) | 0xc200;
+ reg17 = (reg17 & 0xfff0) + nfloor;
+ }
+ phy_write(16, reg16);
+ phy_write(17, reg17);
+ phy_write(25, reg25);
+}
+
+/*
+ Init LongRun DM9802
+*/
+static void
+program_dm9802(void)
+{
+ __u16 reg25;
+ if (!nfloor)
+ nfloor = DM9802_NOISE_FLOOR;
+ reg25 = phy_read(25);
+ reg25 = (reg25 & 0xff00) + nfloor;
+ phy_write(25, reg25);
+}
+
+/* Identify NIC type
+*/
+static void
+identify_nic(void)
+{
+ struct board_info *db = &dmfe_info; /* Point a board information structure */
+ u16 phy_reg3;
+ DM9000_iow(DM9000_NCR, NCR_EXT_PHY);
+ phy_reg3 = phy_read(3);
+ switch (phy_reg3 & 0xfff0) {
+ case 0xb900:
+ if (phy_read(31) == 0x4404) {
+ db->nic_type = HOMERUN_NIC;
+ program_dm9801(phy_reg3);
+ DM9000_DBG("found homerun NIC\n");
+ } else {
+ db->nic_type = LONGRUN_NIC;
+ DM9000_DBG("found longrun NIC\n");
+ program_dm9802();
+ }
+ break;
+ default:
+ db->nic_type = FASTETHER_NIC;
+ break;
+ }
+ DM9000_iow(DM9000_NCR, 0);
+}
+
+/* General Purpose dm9000 reset routine */
+static void
+dm9000_reset(void)
+{
+ DM9000_DBG("resetting\n");
+ DM9000_iow(DM9000_NCR, NCR_RST);
+ udelay(1000); /* delay 1ms */
+}
+
+/* Initilize dm9000 board
+*/
+int
+eth_init(bd_t * bd)
+{
+ int i, oft, lnk;
+ DM9000_DBG("eth_init()\n");
+
+ /* RESET device */
+ dm9000_reset();
+ dm9000_probe();
+
+ /* NIC Type: FASTETHER, HOMERUN, LONGRUN */
+ identify_nic();
+
+ /* GPIO0 on pre-activate PHY */
+ DM9000_iow(DM9000_GPR, 0x00); /*REG_1F bit0 activate phyxcer */
+
+ /* Set PHY */
+ set_PHY_mode();
+
+ /* Program operating register */
+ DM9000_iow(DM9000_NCR, 0x0); /* only intern phy supported by now */
+ DM9000_iow(DM9000_TCR, 0); /* TX Polling clear */
+ DM9000_iow(DM9000_BPTR, 0x3f); /* Less 3Kb, 200us */
+ DM9000_iow(DM9000_FCTR, FCTR_HWOT(3) | FCTR_LWOT(8)); /* Flow Control : High/Low Water */
+ DM9000_iow(DM9000_FCR, 0x0); /* SH FIXME: This looks strange! Flow Control */
+ DM9000_iow(DM9000_SMCR, 0); /* Special Mode */
+ DM9000_iow(DM9000_NSR, NSR_WAKEST | NSR_TX2END | NSR_TX1END); /* clear TX status */
+ DM9000_iow(DM9000_ISR, 0x0f); /* Clear interrupt status */
+
+ /* Set Node address */
+ for (i = 0; i < 6; i++)
+ ((u16 *) bd->bi_enetaddr)[i] = read_srom_word(i);
+
+ if (is_zero_ether_addr(bd->bi_enetaddr) ||
+ is_multicast_ether_addr(bd->bi_enetaddr)) {
+ /* try reading from environment */
+ u8 i;
+ char *s, *e;
+ s = getenv ("ethaddr");
+ for (i = 0; i < 6; ++i) {
+ bd->bi_enetaddr[i] = s ?
+ simple_strtoul (s, &e, 16) : 0;
+ if (s)
+ s = (*e) ? e + 1 : e;
+ }
+ }
+
+ printf("MAC: %02x:%02x:%02x:%02x:%02x:%02x\n", bd->bi_enetaddr[0],
+ bd->bi_enetaddr[1], bd->bi_enetaddr[2], bd->bi_enetaddr[3],
+ bd->bi_enetaddr[4], bd->bi_enetaddr[5]);
+ for (i = 0, oft = 0x10; i < 6; i++, oft++)
+ DM9000_iow(oft, bd->bi_enetaddr[i]);
+ for (i = 0, oft = 0x16; i < 8; i++, oft++)
+ DM9000_iow(oft, 0xff);
+
+ /* read back mac, just to be sure */
+ for (i = 0, oft = 0x10; i < 6; i++, oft++)
+ DM9000_DBG("%02x:", DM9000_ior(oft));
+ DM9000_DBG("\n");
+
+ /* Activate DM9000 */
+ DM9000_iow(DM9000_RCR, RCR_DIS_LONG | RCR_DIS_CRC | RCR_RXEN); /* RX enable */
+ DM9000_iow(DM9000_IMR, IMR_PAR); /* Enable TX/RX interrupt mask */
+ i = 0;
+ while (!(phy_read(1) & 0x20)) { /* autonegation complete bit */
+ udelay(1000);
+ i++;
+ if (i == 10000) {
+ printf("could not establish link\n");
+ return 0;
+ }
+ }
+
+ /* see what we've got */
+ lnk = phy_read(17) >> 12;
+ printf("operating at ");
+ switch (lnk) {
+ case 1:
+ printf("10M half duplex ");
+ break;
+ case 2:
+ printf("10M full duplex ");
+ break;
+ case 4:
+ printf("100M half duplex ");
+ break;
+ case 8:
+ printf("100M full duplex ");
+ break;
+ default:
+ printf("unknown: %d ", lnk);
+ break;
+ }
+ printf("mode\n");
+ return 0;
+}
+
+/*
+ Hardware start transmission.
+ Send a packet to media from the upper layer.
+*/
+int
+eth_send(volatile void *packet, int length)
+{
+ char *data_ptr;
+ u32 tmplen, i;
+ int tmo;
+ DM9000_DBG("eth_send: length: %d\n", length);
+ for (i = 0; i < length; i++) {
+ if (i % 8 == 0)
+ DM9000_DBG("\nSend: 02x: ", i);
+ DM9000_DBG("%02x ", ((unsigned char *) packet)[i]);
+ } DM9000_DBG("\n");
+
+ /* Move data to DM9000 TX RAM */
+ data_ptr = (char *) packet;
+ DM9000_outb(DM9000_MWCMD, DM9000_IO);
+
+#ifdef CONFIG_DM9000_USE_8BIT
+ /* Byte mode */
+ for (i = 0; i < length; i++)
+ DM9000_outb((data_ptr[i] & 0xff), DM9000_DATA);
+
+#endif /* */
+#ifdef CONFIG_DM9000_USE_16BIT
+ tmplen = (length + 1) / 2;
+ for (i = 0; i < tmplen; i++)
+ DM9000_outw(((u16 *) data_ptr)[i], DM9000_DATA);
+
+#endif /* */
+#ifdef CONFIG_DM9000_USE_32BIT
+ tmplen = (length + 3) / 4;
+ for (i = 0; i < tmplen; i++)
+ DM9000_outl(((u32 *) data_ptr)[i], DM9000_DATA);
+
+#endif /* */
+
+ /* Set TX length to DM9000 */
+ DM9000_iow(DM9000_TXPLL, length & 0xff);
+ DM9000_iow(DM9000_TXPLH, (length >> 8) & 0xff);
+
+ /* Issue TX polling command */
+ DM9000_iow(DM9000_TCR, TCR_TXREQ); /* Cleared after TX complete */
+
+ /* wait for end of transmission */
+ tmo = get_timer(0) + 5 * CFG_HZ;
+ while (DM9000_ior(DM9000_TCR) & TCR_TXREQ) {
+ if (get_timer(0) >= tmo) {
+ printf("transmission timeout\n");
+ break;
+ }
+ }
+ DM9000_DBG("transmit done\n\n");
+ return 0;
+}
+
+/*
+ Stop the interface.
+ The interface is stopped when it is brought.
+*/
+void
+eth_halt(void)
+{
+ DM9000_DBG("eth_halt\n");
+
+ /* RESET devie */
+ phy_write(0, 0x8000); /* PHY RESET */
+ DM9000_iow(DM9000_GPR, 0x01); /* Power-Down PHY */
+ DM9000_iow(DM9000_IMR, 0x80); /* Disable all interrupt */
+ DM9000_iow(DM9000_RCR, 0x00); /* Disable RX */
+}
+
+/*
+ Received a packet and pass to upper layer
+*/
+int
+eth_rx(void)
+{
+ u8 rxbyte, *rdptr = (u8 *) NetRxPackets[0];
+ u16 RxStatus, RxLen = 0;
+ u32 tmplen, i;
+#ifdef CONFIG_DM9000_USE_32BIT
+ u32 tmpdata;
+#endif
+
+ /* Check packet ready or not */
+ DM9000_ior(DM9000_MRCMDX); /* Dummy read */
+ rxbyte = DM9000_inb(DM9000_DATA); /* Got most updated data */
+ if (rxbyte == 0)
+ return 0;
+
+ /* Status check: this byte must be 0 or 1 */
+ if (rxbyte > 1) {
+ DM9000_iow(DM9000_RCR, 0x00); /* Stop Device */
+ DM9000_iow(DM9000_ISR, 0x80); /* Stop INT request */
+ DM9000_DBG("rx status check: %d\n", rxbyte);
+ }
+ DM9000_DBG("receiving packet\n");
+
+ /* A packet ready now & Get status/length */
+ DM9000_outb(DM9000_MRCMD, DM9000_IO);
+
+#ifdef CONFIG_DM9000_USE_8BIT
+ RxStatus = DM9000_inb(DM9000_DATA) + (DM9000_inb(DM9000_DATA) << 8);
+ RxLen = DM9000_inb(DM9000_DATA) + (DM9000_inb(DM9000_DATA) << 8);
+
+#endif /* */
+#ifdef CONFIG_DM9000_USE_16BIT
+ RxStatus = DM9000_inw(DM9000_DATA);
+ RxLen = DM9000_inw(DM9000_DATA);
+
+#endif /* */
+#ifdef CONFIG_DM9000_USE_32BIT
+ tmpdata = DM9000_inl(DM9000_DATA);
+ RxStatus = tmpdata;
+ RxLen = tmpdata >> 16;
+
+#endif /* */
+ DM9000_DBG("rx status: 0x%04x rx len: %d\n", RxStatus, RxLen);
+
+ /* Move data from DM9000 */
+ /* Read received packet from RX SRAM */
+#ifdef CONFIG_DM9000_USE_8BIT
+ for (i = 0; i < RxLen; i++)
+ rdptr[i] = DM9000_inb(DM9000_DATA);
+
+#endif /* */
+#ifdef CONFIG_DM9000_USE_16BIT
+ tmplen = (RxLen + 1) / 2;
+ for (i = 0; i < tmplen; i++)
+ ((u16 *) rdptr)[i] = DM9000_inw(DM9000_DATA);
+
+#endif /* */
+#ifdef CONFIG_DM9000_USE_32BIT
+ tmplen = (RxLen + 3) / 4;
+ for (i = 0; i < tmplen; i++)
+ ((u32 *) rdptr)[i] = DM9000_inl(DM9000_DATA);
+
+#endif /* */
+ if ((RxStatus & 0xbf00) || (RxLen < 0x40)
+ || (RxLen > DM9000_PKT_MAX)) {
+ if (RxStatus & 0x100) {
+ printf("rx fifo error\n");
+ }
+ if (RxStatus & 0x200) {
+ printf("rx crc error\n");
+ }
+ if (RxStatus & 0x8000) {
+ printf("rx length error\n");
+ }
+ if (RxLen > DM9000_PKT_MAX) {
+ printf("rx length too big\n");
+ dm9000_reset();
+ }
+ } else {
+
+ /* Pass to upper layer */
+ DM9000_DBG("passing packet to upper layer\n");
+ NetReceive(NetRxPackets[0], RxLen);
+ return RxLen;
+ }
+ return 0;
+}
+
+/*
+ Read a word data from SROM
+*/
+u16
+read_srom_word(int offset)
+{
+ DM9000_iow(DM9000_EPAR, offset);
+ DM9000_iow(DM9000_EPCR, 0x4);
+ udelay(8000);
+ DM9000_iow(DM9000_EPCR, 0x0);
+ return (DM9000_ior(DM9000_EPDRL) + (DM9000_ior(DM9000_EPDRH) << 8));
+}
+
+void
+write_srom_word(int offset, u16 val)
+{
+ DM9000_iow(DM9000_EPAR, offset);
+ DM9000_iow(DM9000_EPDRH, ((val >> 8) & 0xff));
+ DM9000_iow(DM9000_EPDRL, (val & 0xff));
+ DM9000_iow(DM9000_EPCR, 0x12);
+ udelay(8000);
+ DM9000_iow(DM9000_EPCR, 0);
+}
+
+
+/*
+ Read a byte from I/O port
+*/
+static u8
+DM9000_ior(int reg)
+{
+ DM9000_outb(reg, DM9000_IO);
+ return DM9000_inb(DM9000_DATA);
+}
+
+/*
+ Write a byte to I/O port
+*/
+static void
+DM9000_iow(int reg, u8 value)
+{
+ DM9000_outb(reg, DM9000_IO);
+ DM9000_outb(value, DM9000_DATA);
+}
+
+/*
+ Read a word from phyxcer
+*/
+static u16
+phy_read(int reg)
+{
+ u16 val;
+
+ /* Fill the phyxcer register into REG_0C */
+ DM9000_iow(DM9000_EPAR, DM9000_PHY | reg);
+ DM9000_iow(DM9000_EPCR, 0xc); /* Issue phyxcer read command */
+ udelay(100); /* Wait read complete */
+ DM9000_iow(DM9000_EPCR, 0x0); /* Clear phyxcer read command */
+ val = (DM9000_ior(DM9000_EPDRH) << 8) | DM9000_ior(DM9000_EPDRL);
+
+ /* The read data keeps on REG_0D & REG_0E */
+ DM9000_DBG("phy_read(%d): %d\n", reg, val);
+ return val;
+}
+
+/*
+ Write a word to phyxcer
+*/
+static void
+phy_write(int reg, u16 value)
+{
+
+ /* Fill the phyxcer register into REG_0C */
+ DM9000_iow(DM9000_EPAR, DM9000_PHY | reg);
+
+ /* Fill the written data into REG_0D & REG_0E */
+ DM9000_iow(DM9000_EPDRL, (value & 0xff));
+ DM9000_iow(DM9000_EPDRH, ((value >> 8) & 0xff));
+ DM9000_iow(DM9000_EPCR, 0xa); /* Issue phyxcer write command */
+ udelay(500); /* Wait write complete */
+ DM9000_iow(DM9000_EPCR, 0x0); /* Clear phyxcer write command */
+ DM9000_DBG("phy_write(reg:%d, value:%d)\n", reg, value);
+}
+#endif /* CONFIG_DRIVER_DM9000 */