diff options
Diffstat (limited to 'drivers/net/cs8900.c')
| -rw-r--r-- | drivers/net/cs8900.c | 276 |
1 files changed, 162 insertions, 114 deletions
diff --git a/drivers/net/cs8900.c b/drivers/net/cs8900.c index 5e2b3b0..587f7f6 100644 --- a/drivers/net/cs8900.c +++ b/drivers/net/cs8900.c @@ -1,6 +1,9 @@ /* * 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 @@ -38,220 +41,229 @@ #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)) + #else -static unsigned short get_reg_init_bus (int regno) -{ - /* force 16 bit busmode */ - volatile unsigned char c; - c = CS8900_BUS16_0; - c = CS8900_BUS16_1; - c = CS8900_BUS16_0; - c = CS8900_BUS16_1; - c = CS8900_BUS16_0; +#define REG_WRITE(v, a) writew((v),(a)) +#define REG_READ(a) readw((a)) - CS8900_PPTR = regno; - return CS8900_PDATA; +static u16 get_reg_init_bus(struct eth_device *dev, int regno) +{ + /* force 16 bit busmode */ + volatile u8 c; + struct cs8900_priv *priv = (struct cs8900_priv *)(dev->priv); + uint8_t volatile * const iob = (uint8_t volatile * const)dev->iobase; + + c = readb(iob); + c = readb(iob + 1); + c = readb(iob); + c = readb(iob + 1); + c = readb(iob); + + 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 (void) +void cs8900_get_enetaddr(struct eth_device *dev) { int i; - uchar enetaddr[6]; - - /* if the env is setup, then bail */ - if (eth_getenv_enetaddr("ethaddr", enetaddr)) - return; /* 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; + for (i = 0; i < 3; i++) { + u32 Addr; - Addr = get_reg (PP_IA + i * 2); - enetaddr[i * 2] = Addr & 0xFF; - enetaddr[i * 2 + 1] = Addr >> 8; + Addr = get_reg(dev, PP_IA + i * 2); + dev->enetaddr[i * 2] = Addr & 0xFF; + dev->enetaddr[i * 2 + 1] = Addr >> 8; } - - eth_setenv_enetaddr("ethaddr", enetaddr); - debug("### Set environment from HW MAC addr = \"%pM\"\n", enetaddr); } } -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[6]; + 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 */ - eth_getenv_enetaddr("ethaddr", enetaddr); - put_reg (PP_IA + 0, enetaddr[0] | (enetaddr[1] << 8)); - put_reg (PP_IA + 2, enetaddr[2] | (enetaddr[3] << 8)); - put_reg (PP_IA + 4, enetaddr[4] | (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; - status = get_reg (PP_RER); + struct cs8900_priv *priv = (struct cs8900_priv *)(dev->priv); + + 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, + volatile 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) ; } @@ -259,12 +271,13 @@ static void cs8900_e2prom_ready(void) /* 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; } @@ -274,16 +287,51 @@ int cs8900_e2prom_read(unsigned char addr, unsigned short *value) /* 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) { + free(dev); + return 0; + } + memset(dev, 0, sizeof(*dev)); + + priv = malloc(sizeof(*priv)); + if (!priv) { + free(priv); + return 0; + } + memset(priv, 0, sizeof(*priv)); + priv->regs = (struct cs8900_regs *)base_addr; + + /* Load MAC address from EEPROM */ + cs8900_get_enetaddr(dev); + + dev->iobase = base_addr; + dev->priv = priv; + dev->init = cs8900_init; + dev->halt = cs8900_halt; + dev->send = cs8900_send; + dev->recv = cs8900_recv; + sprintf(dev->name, "%s-%hu", CS8900_DRIVERNAME, dev_num); + eth_register(dev); return 0; } |