/*
* Cirrus Logic CS8900A Ethernet
*
+ * (C) 2009 Ben Warren , biggerbadderben@gmail.com
+ * Converted to use CONFIG_NET_MULTI API
+ *
* (C) 2003 Wolfgang Denk, wd@denx.de
* Extension to synchronize ethaddr environment variable
* against value in EEPROM
*
* Copyright (C) 1999 Ben Williamson <benw@pobox.com>
*
- * See file CREDITS for list of people who contributed to this
- * project.
- *
* This program is loaded into SRAM in bootstrap mode, where it waits
* for commands on UART1 to read and write memory, jump to code etc.
* A design goal for this program is to be entirely independent of the
* this code in bootstrap mode. All the board specifics can be handled on
* the host.
*
- * 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.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ * SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <command.h>
-#include "cs8900.h"
+#include <asm/io.h>
#include <net.h>
+#include <malloc.h>
+#include "cs8900.h"
#undef DEBUG
/* packet page register access functions */
-#ifdef CS8900_BUS32
+#ifdef CONFIG_CS8900_BUS32
+
+#define REG_WRITE(v, a) writel((v),(a))
+#define REG_READ(a) readl((a))
+
/* we don't need 16 bit initialisation on 32 bit bus */
-#define get_reg_init_bus(x) get_reg((x))
+#define get_reg_init_bus(r,d) get_reg((r),(d))
+
#else
-static unsigned short get_reg_init_bus (int regno)
+
+#define REG_WRITE(v, a) writew((v),(a))
+#define REG_READ(a) readw((a))
+
+static u16 get_reg_init_bus(struct eth_device *dev, int regno)
{
/* force 16 bit busmode */
- volatile unsigned char c;
+ struct cs8900_priv *priv = (struct cs8900_priv *)(dev->priv);
+ uint8_t volatile * const iob = (uint8_t volatile * const)dev->iobase;
- c = CS8900_BUS16_0;
- c = CS8900_BUS16_1;
- c = CS8900_BUS16_0;
- c = CS8900_BUS16_1;
- c = CS8900_BUS16_0;
+ readb(iob);
+ readb(iob + 1);
+ readb(iob);
+ readb(iob + 1);
+ readb(iob);
- CS8900_PPTR = regno;
- return CS8900_PDATA;
+ REG_WRITE(regno, &priv->regs->pptr);
+ return REG_READ(&priv->regs->pdata);
}
#endif
-static unsigned short get_reg (int regno)
+static u16 get_reg(struct eth_device *dev, int regno)
{
- CS8900_PPTR = regno;
- return CS8900_PDATA;
+ struct cs8900_priv *priv = (struct cs8900_priv *)(dev->priv);
+ REG_WRITE(regno, &priv->regs->pptr);
+ return REG_READ(&priv->regs->pdata);
}
-static void put_reg (int regno, unsigned short val)
+static void put_reg(struct eth_device *dev, int regno, u16 val)
{
- CS8900_PPTR = regno;
- CS8900_PDATA = val;
+ struct cs8900_priv *priv = (struct cs8900_priv *)(dev->priv);
+ REG_WRITE(regno, &priv->regs->pptr);
+ REG_WRITE(val, &priv->regs->pdata);
}
-static void eth_reset (void)
+static void cs8900_reset(struct eth_device *dev)
{
int tmo;
- unsigned short us;
+ u16 us;
/* reset NIC */
- put_reg (PP_SelfCTL, get_reg (PP_SelfCTL) | PP_SelfCTL_Reset);
+ put_reg(dev, PP_SelfCTL, get_reg(dev, PP_SelfCTL) | PP_SelfCTL_Reset);
/* wait for 200ms */
- udelay (200000);
+ udelay(200000);
/* Wait until the chip is reset */
- tmo = get_timer (0) + 1 * CONFIG_SYS_HZ;
- while ((((us = get_reg_init_bus (PP_SelfSTAT)) & PP_SelfSTAT_InitD) == 0)
- && tmo < get_timer (0))
+ tmo = get_timer(0) + 1 * CONFIG_SYS_HZ;
+ while ((((us = get_reg_init_bus(dev, PP_SelfSTAT)) &
+ PP_SelfSTAT_InitD) == 0) && tmo < get_timer(0))
/*NOP*/;
}
-static void eth_reginit (void)
+static void cs8900_reginit(struct eth_device *dev)
{
/* receive only error free packets addressed to this card */
- put_reg (PP_RxCTL, PP_RxCTL_IA | PP_RxCTL_Broadcast | PP_RxCTL_RxOK);
+ put_reg(dev, PP_RxCTL,
+ PP_RxCTL_IA | PP_RxCTL_Broadcast | PP_RxCTL_RxOK);
/* do not generate any interrupts on receive operations */
- put_reg (PP_RxCFG, 0);
+ put_reg(dev, PP_RxCFG, 0);
/* do not generate any interrupts on transmit operations */
- put_reg (PP_TxCFG, 0);
+ put_reg(dev, PP_TxCFG, 0);
/* do not generate any interrupts on buffer operations */
- put_reg (PP_BufCFG, 0);
+ put_reg(dev, PP_BufCFG, 0);
/* enable transmitter/receiver mode */
- put_reg (PP_LineCTL, PP_LineCTL_Rx | PP_LineCTL_Tx);
+ put_reg(dev, PP_LineCTL, PP_LineCTL_Rx | PP_LineCTL_Tx);
}
-void cs8900_get_enetaddr (uchar * addr)
+void cs8900_get_enetaddr(struct eth_device *dev)
{
int i;
- unsigned char env_enetaddr[6];
- char *tmp = getenv ("ethaddr");
- char *end;
-
- for (i=0; i<6; i++) {
- env_enetaddr[i] = tmp ? simple_strtoul(tmp, &end, 16) : 0;
- if (tmp)
- tmp = (*end) ? end+1 : end;
- }
/* verify chip id */
- if (get_reg_init_bus (PP_ChipID) != 0x630e)
+ if (get_reg_init_bus(dev, PP_ChipID) != 0x630e)
return;
- eth_reset ();
- if ((get_reg (PP_SelfSTAT) & (PP_SelfSTAT_EEPROM | PP_SelfSTAT_EEPROM_OK)) ==
- (PP_SelfSTAT_EEPROM | PP_SelfSTAT_EEPROM_OK)) {
+ cs8900_reset(dev);
+ if ((get_reg(dev, PP_SelfSTAT) &
+ (PP_SelfSTAT_EEPROM | PP_SelfSTAT_EEPROM_OK)) ==
+ (PP_SelfSTAT_EEPROM | PP_SelfSTAT_EEPROM_OK)) {
/* Load the MAC from EEPROM */
- for (i = 0; i < 6 / 2; i++) {
- unsigned int Addr;
-
- Addr = get_reg (PP_IA + i * 2);
- addr[i * 2] = Addr & 0xFF;
- addr[i * 2 + 1] = Addr >> 8;
- }
+ for (i = 0; i < 3; i++) {
+ u32 Addr;
- if (memcmp(env_enetaddr, "\0\0\0\0\0\0", 6) != 0 &&
- memcmp(env_enetaddr, addr, 6) != 0) {
- printf ("\nWarning: MAC addresses don't match:\n");
- printf ("\tHW MAC address: "
- "%02X:%02X:%02X:%02X:%02X:%02X\n",
- addr[0], addr[1],
- addr[2], addr[3],
- addr[4], addr[5] );
- printf ("\t\"ethaddr\" value: "
- "%02X:%02X:%02X:%02X:%02X:%02X\n",
- env_enetaddr[0], env_enetaddr[1],
- env_enetaddr[2], env_enetaddr[3],
- env_enetaddr[4], env_enetaddr[5]) ;
- debug ("### Set MAC addr from environment\n");
- memcpy (addr, env_enetaddr, 6);
- }
- if (!tmp) {
- char ethaddr[20];
- sprintf (ethaddr, "%02X:%02X:%02X:%02X:%02X:%02X",
- addr[0], addr[1],
- addr[2], addr[3],
- addr[4], addr[5]) ;
- debug ("### Set environment from HW MAC addr = \"%s\"\n", ethaddr);
- setenv ("ethaddr", ethaddr);
+ Addr = get_reg(dev, PP_IA + i * 2);
+ dev->enetaddr[i * 2] = Addr & 0xFF;
+ dev->enetaddr[i * 2 + 1] = Addr >> 8;
}
}
}
-void eth_halt (void)
+void cs8900_halt(struct eth_device *dev)
{
/* disable transmitter/receiver mode */
- put_reg (PP_LineCTL, 0);
+ put_reg(dev, PP_LineCTL, 0);
/* "shutdown" to show ChipID or kernel wouldn't find he cs8900 ... */
- get_reg_init_bus (PP_ChipID);
+ get_reg_init_bus(dev, PP_ChipID);
}
-int eth_init (bd_t * bd)
+static int cs8900_init(struct eth_device *dev, bd_t * bd)
{
+ uchar *enetaddr = dev->enetaddr;
+ u16 id;
+
/* verify chip id */
- if (get_reg_init_bus (PP_ChipID) != 0x630e) {
- printf ("CS8900 Ethernet chip not found?!\n");
- return 0;
+ id = get_reg_init_bus(dev, PP_ChipID);
+ if (id != 0x630e) {
+ printf ("CS8900 Ethernet chip not found: "
+ "ID=0x%04x instead 0x%04x\n", id, 0x630e);
+ return 1;
}
- eth_reset ();
+ cs8900_reset (dev);
/* set the ethernet address */
- put_reg (PP_IA + 0, bd->bi_enetaddr[0] | (bd->bi_enetaddr[1] << 8));
- put_reg (PP_IA + 2, bd->bi_enetaddr[2] | (bd->bi_enetaddr[3] << 8));
- put_reg (PP_IA + 4, bd->bi_enetaddr[4] | (bd->bi_enetaddr[5] << 8));
+ put_reg(dev, PP_IA + 0, enetaddr[0] | (enetaddr[1] << 8));
+ put_reg(dev, PP_IA + 2, enetaddr[2] | (enetaddr[3] << 8));
+ put_reg(dev, PP_IA + 4, enetaddr[4] | (enetaddr[5] << 8));
- eth_reginit ();
+ cs8900_reginit(dev);
return 0;
}
/* Get a data block via Ethernet */
-int eth_rx (void)
+static int cs8900_recv(struct eth_device *dev)
{
int i;
- unsigned short rxlen;
- unsigned short *addr;
- unsigned short status;
+ u16 rxlen;
+ u16 *addr;
+ u16 status;
+
+ struct cs8900_priv *priv = (struct cs8900_priv *)(dev->priv);
- status = get_reg (PP_RER);
+ status = get_reg(dev, PP_RER);
if ((status & PP_RER_RxOK) == 0)
return 0;
- status = CS8900_RTDATA; /* stat */
- rxlen = CS8900_RTDATA; /* len */
+ status = REG_READ(&priv->regs->rtdata);
+ rxlen = REG_READ(&priv->regs->rtdata);
-#ifdef DEBUG
if (rxlen > PKTSIZE_ALIGN + PKTALIGN)
- printf ("packet too big!\n");
-#endif
- for (addr = (unsigned short *) NetRxPackets[0], i = rxlen >> 1; i > 0;
+ debug("packet too big!\n");
+ for (addr = (u16 *) NetRxPackets[0], i = rxlen >> 1; i > 0;
i--)
- *addr++ = CS8900_RTDATA;
+ *addr++ = REG_READ(&priv->regs->rtdata);
if (rxlen & 1)
- *addr++ = CS8900_RTDATA;
+ *addr++ = REG_READ(&priv->regs->rtdata);
/* Pass the packet up to the protocol layers. */
NetReceive (NetRxPackets[0], rxlen);
-
return rxlen;
}
/* Send a data block via Ethernet. */
-int eth_send (volatile void *packet, int length)
+static int cs8900_send(struct eth_device *dev, void *packet, int length)
{
- volatile unsigned short *addr;
+ volatile u16 *addr;
int tmo;
- unsigned short s;
+ u16 s;
+ struct cs8900_priv *priv = (struct cs8900_priv *)(dev->priv);
retry:
/* initiate a transmit sequence */
- CS8900_TxCMD = PP_TxCmd_TxStart_Full;
- CS8900_TxLEN = length;
+ REG_WRITE(PP_TxCmd_TxStart_Full, &priv->regs->txcmd);
+ REG_WRITE(length, &priv->regs->txlen);
/* Test to see if the chip has allocated memory for the packet */
- if ((get_reg (PP_BusSTAT) & PP_BusSTAT_TxRDY) == 0) {
+ if ((get_reg(dev, PP_BusSTAT) & PP_BusSTAT_TxRDY) == 0) {
/* Oops... this should not happen! */
-#ifdef DEBUG
- printf ("cs: unable to send packet; retrying...\n");
-#endif
- for (tmo = get_timer (0) + 5 * CONFIG_SYS_HZ; get_timer (0) < tmo;)
+ debug("cs: unable to send packet; retrying...\n");
+ for (tmo = get_timer(0) + 5 * CONFIG_SYS_HZ;
+ get_timer(0) < tmo;)
/*NOP*/;
- eth_reset ();
- eth_reginit ();
+ cs8900_reset(dev);
+ cs8900_reginit(dev);
goto retry;
}
/* Write the contents of the packet */
/* assume even number of bytes */
for (addr = packet; length > 0; length -= 2)
- CS8900_RTDATA = *addr++;
+ REG_WRITE(*addr++, &priv->regs->rtdata);
/* wait for transfer to succeed */
- tmo = get_timer (0) + 5 * CONFIG_SYS_HZ;
- while ((s = get_reg (PP_TER) & ~0x1F) == 0) {
- if (get_timer (0) >= tmo)
+ tmo = get_timer(0) + 5 * CONFIG_SYS_HZ;
+ while ((s = get_reg(dev, PP_TER) & ~0x1F) == 0) {
+ if (get_timer(0) >= tmo)
break;
}
/* nothing */ ;
- if ((s & (PP_TER_CRS | PP_TER_TxOK)) != PP_TER_TxOK) {
-#ifdef DEBUG
- printf ("\ntransmission error %#x\n", s);
-#endif
+ if((s & (PP_TER_CRS | PP_TER_TxOK)) != PP_TER_TxOK) {
+ debug("\ntransmission error %#x\n", s);
}
return 0;
}
-static void cs8900_e2prom_ready(void)
+static void cs8900_e2prom_ready(struct eth_device *dev)
{
- while (get_reg(PP_SelfSTAT) & SI_BUSY)
+ while (get_reg(dev, PP_SelfSTAT) & SI_BUSY)
;
}
/* read a 16-bit word out of the EEPROM */
/***********************************************************/
-int cs8900_e2prom_read(unsigned char addr, unsigned short *value)
+int cs8900_e2prom_read(struct eth_device *dev,
+ u8 addr, u16 *value)
{
- cs8900_e2prom_ready();
- put_reg(PP_EECMD, EEPROM_READ_CMD | addr);
- cs8900_e2prom_ready();
- *value = get_reg(PP_EEData);
+ cs8900_e2prom_ready(dev);
+ put_reg(dev, PP_EECMD, EEPROM_READ_CMD | addr);
+ cs8900_e2prom_ready(dev);
+ *value = get_reg(dev, PP_EEData);
return 0;
}
/* write a 16-bit word into the EEPROM */
/***********************************************************/
-int cs8900_e2prom_write(unsigned char addr, unsigned short value)
+int cs8900_e2prom_write(struct eth_device *dev, u8 addr, u16 value)
+{
+ cs8900_e2prom_ready(dev);
+ put_reg(dev, PP_EECMD, EEPROM_WRITE_EN);
+ cs8900_e2prom_ready(dev);
+ put_reg(dev, PP_EEData, value);
+ put_reg(dev, PP_EECMD, EEPROM_WRITE_CMD | addr);
+ cs8900_e2prom_ready(dev);
+ put_reg(dev, PP_EECMD, EEPROM_WRITE_DIS);
+ cs8900_e2prom_ready(dev);
+
+ return 0;
+}
+
+int cs8900_initialize(u8 dev_num, int base_addr)
{
- cs8900_e2prom_ready();
- put_reg(PP_EECMD, EEPROM_WRITE_EN);
- cs8900_e2prom_ready();
- put_reg(PP_EEData, value);
- put_reg(PP_EECMD, EEPROM_WRITE_CMD | addr);
- cs8900_e2prom_ready();
- put_reg(PP_EECMD, EEPROM_WRITE_DIS);
- cs8900_e2prom_ready();
+ struct eth_device *dev;
+ struct cs8900_priv *priv;
+
+ dev = malloc(sizeof(*dev));
+ if (!dev) {
+ return 0;
+ }
+ memset(dev, 0, sizeof(*dev));
+
+ priv = malloc(sizeof(*priv));
+ if (!priv) {
+ free(dev);
+ return 0;
+ }
+ memset(priv, 0, sizeof(*priv));
+ priv->regs = (struct cs8900_regs *)base_addr;
+
+ dev->iobase = base_addr;
+ dev->priv = priv;
+ dev->init = cs8900_init;
+ dev->halt = cs8900_halt;
+ dev->send = cs8900_send;
+ dev->recv = cs8900_recv;
+
+ /* Load MAC address from EEPROM */
+ cs8900_get_enetaddr(dev);
+
+ sprintf(dev->name, "%s-%hu", CS8900_DRIVERNAME, dev_num);
+ eth_register(dev);
return 0;
}
projects / karo-tx-uboot.git / blobdiff