bcm570x.c

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/*
 * Broadcom BCM570x Ethernet Driver for U-Boot.
 * Support 5701, 5702, 5703, and 5704. Single instance driver.
 * Copyright (C) 2002 James F. Dougherty ([e-mail])
 */

#include <common.h>

#if (CONFIG_COMMANDS & CFG_CMD_NET) && (!defined(CONFIG_NET_MULTI)) && \
	defined(CONFIG_BCM570x)

#ifdef CONFIG_BMW
#include <mpc824x.h>
#endif
#include <net.h>
#include "bcm570x_mm.h"
#include "bcm570x_autoneg.h"
#include <pci.h>
#include <malloc.h>


/*
 * PCI Registers and definitions.
 */
#define PCI_CMD_MASK	0xffff0000	/* mask to save status bits */
#define PCI_ANY_ID (~0)

/*
 * PCI memory base for Ethernet device as well as device Interrupt.
 */
#define BCM570X_MBAR 	0x80100000
#define BCM570X_ILINE   1


#define SECOND_USEC	1000000
#define MAX_PACKET_SIZE 1600
#define MAX_UNITS       4

/* Globals to this module */
int initialized = 0;
unsigned int ioBase = 0;
volatile PLM_DEVICE_BLOCK    pDevice = NULL;        /* 570x softc */
volatile PUM_DEVICE_BLOCK    pUmDevice = NULL;

/* Used to pass the full-duplex flag, etc. */
int line_speed[MAX_UNITS] = {0,0,0,0};
static int full_duplex[MAX_UNITS] = {1,1,1,1};
static int rx_flow_control[MAX_UNITS] = {0,0,0,0};
static int tx_flow_control[MAX_UNITS] = {0,0,0,0};
static int auto_flow_control[MAX_UNITS] = {0,0,0,0};
static int tx_checksum[MAX_UNITS] = {1,1,1,1};
static int rx_checksum[MAX_UNITS] = {1,1,1,1};
static int auto_speed[MAX_UNITS] = {1,1,1,1};

#if JUMBO_FRAMES
/* Jumbo MTU for interfaces. */
static int mtu[MAX_UNITS] = {0,0,0,0};
#endif

/* Turn on Wake-on lan for a device unit */
static int enable_wol[MAX_UNITS] = {0,0,0,0};

#define TX_DESC_CNT DEFAULT_TX_PACKET_DESC_COUNT
static unsigned int tx_pkt_desc_cnt[MAX_UNITS] =
	{TX_DESC_CNT,TX_DESC_CNT,TX_DESC_CNT, TX_DESC_CNT};

#define RX_DESC_CNT DEFAULT_STD_RCV_DESC_COUNT
static unsigned int rx_std_desc_cnt[MAX_UNITS] =
	{RX_DESC_CNT,RX_DESC_CNT,RX_DESC_CNT,RX_DESC_CNT};

static unsigned int rx_adaptive_coalesce[MAX_UNITS] = {1,1,1,1};

#if T3_JUMBO_RCV_RCB_ENTRY_COUNT
#define JBO_DESC_CNT DEFAULT_JUMBO_RCV_DESC_COUNT
static unsigned int rx_jumbo_desc_cnt[MAX_UNITS] =
	{JBO_DESC_CNT, JBO_DESC_CNT, JBO_DESC_CNT, JBO_DESC_CNT};
#endif
#define RX_COAL_TK DEFAULT_RX_COALESCING_TICKS
static unsigned int rx_coalesce_ticks[MAX_UNITS] =
	{RX_COAL_TK, RX_COAL_TK, RX_COAL_TK, RX_COAL_TK};

#define RX_COAL_FM DEFAULT_RX_MAX_COALESCED_FRAMES
static unsigned int rx_max_coalesce_frames[MAX_UNITS] =
	{RX_COAL_FM, RX_COAL_FM, RX_COAL_FM, RX_COAL_FM};

#define TX_COAL_TK DEFAULT_TX_COALESCING_TICKS
static unsigned int tx_coalesce_ticks[MAX_UNITS] =
	{TX_COAL_TK, TX_COAL_TK, TX_COAL_TK, TX_COAL_TK};

#define TX_COAL_FM DEFAULT_TX_MAX_COALESCED_FRAMES
static unsigned int tx_max_coalesce_frames[MAX_UNITS] =
	{TX_COAL_FM, TX_COAL_FM, TX_COAL_FM, TX_COAL_FM};

#define ST_COAL_TK DEFAULT_STATS_COALESCING_TICKS
static unsigned int stats_coalesce_ticks[MAX_UNITS] =
	{ST_COAL_TK, ST_COAL_TK, ST_COAL_TK, ST_COAL_TK};


/*
 * Legitimate values for BCM570x device types
 */
typedef enum {
	BCM5700VIGIL = 0,
	BCM5700A6,
	BCM5700T6,
	BCM5700A9,
	BCM5700T9,
	BCM5700,
	BCM5701A5,
	BCM5701T1,
	BCM5701T8,
	BCM5701A7,
	BCM5701A10,
	BCM5701A12,
	BCM5701,
	BCM5702,
	BCM5703,
	BCM5703A31,
	TC996T,
	TC996ST,
	TC996SSX,
	TC996SX,
	TC996BT,
	TC997T,
	TC997SX,
	TC1000T,
	TC940BR01,
	TC942BR01,
	NC6770,
	NC7760,
	NC7770,
	NC7780
} board_t;

/* Chip-Rev names for each device-type */
static struct {
    char* name;
} chip_rev[] = {
       {"BCM5700VIGIL"},
       {"BCM5700A6"},
       {"BCM5700T6"},
       {"BCM5700A9"},
       {"BCM5700T9"},
       {"BCM5700"},
       {"BCM5701A5"},
       {"BCM5701T1"},
       {"BCM5701T8"},
       {"BCM5701A7"},
       {"BCM5701A10"},
       {"BCM5701A12"},
       {"BCM5701"},
       {"BCM5702"},
       {"BCM5703"},
       {"BCM5703A31"},
       {"TC996T"},
       {"TC996ST"},
       {"TC996SSX"},
       {"TC996SX"},
       {"TC996BT"},
       {"TC997T"},
       {"TC997SX"},
       {"TC1000T"},
       {"TC940BR01"},
       {"TC942BR01"},
       {"NC6770"},
       {"NC7760"},
       {"NC7770"},
       {"NC7780"},
       {0}
};


/* indexed by board_t, above */
static struct {
    char *name;
} board_info[] = {
	{ "Broadcom Vigil B5700 1000Base-T" },
	{ "Broadcom BCM5700 1000Base-T" },
	{ "Broadcom BCM5700 1000Base-SX" },
	{ "Broadcom BCM5700 1000Base-SX" },
	{ "Broadcom BCM5700 1000Base-T" },
	{ "Broadcom BCM5700" },
	{ "Broadcom BCM5701 1000Base-T" },
	{ "Broadcom BCM5701 1000Base-T" },
	{ "Broadcom BCM5701 1000Base-T" },
	{ "Broadcom BCM5701 1000Base-SX" },
	{ "Broadcom BCM5701 1000Base-T" },
	{ "Broadcom BCM5701 1000Base-T" },
	{ "Broadcom BCM5701" },
	{ "Broadcom BCM5702 1000Base-T" },
	{ "Broadcom BCM5703 1000Base-T" },
	{ "Broadcom BCM5703 1000Base-SX" },
	{ "3Com 3C996 10/100/1000 Server NIC" },
	{ "3Com 3C996 10/100/1000 Server NIC" },
	{ "3Com 3C996 Gigabit Fiber-SX Server NIC" },
	{ "3Com 3C996 Gigabit Fiber-SX Server NIC" },
	{ "3Com 3C996B Gigabit Server NIC" },
	{ "3Com 3C997 Gigabit Server NIC" },
	{ "3Com 3C997 Gigabit Fiber-SX Server NIC" },
	{ "3Com 3C1000 Gigabit NIC" },
	{ "3Com 3C940 Gigabit LOM (21X21)" },
	{ "3Com 3C942 Gigabit LOM (31X31)" },
	{ "Compaq NC6770 Gigabit Server Adapter" },
	{ "Compaq NC7760 Gigabit Server Adapter" },
	{ "Compaq NC7770 Gigabit Server Adapter" },
	{ "Compaq NC7780 Gigabit Server Adapter" },
	{ 0 },
};

/* PCI Devices which use the 570x chipset */
struct pci_device_table {
    unsigned short vendor_id, device_id; /* Vendor/DeviceID */
    unsigned short subvendor, subdevice; /* Subsystem ID's or PCI_ANY_ID */
    unsigned int class, class_mask; /* (class,subclass,prog-if) triplet */
    unsigned long board_id;	    /* Data private to the driver */
    int io_size, min_latency;
} bcm570xDevices[] = {
	{0x14e4, 0x1644, 0x1014, 0x0277, 0, 0, BCM5700VIGIL ,128,32},
	{0x14e4, 0x1644, 0x14e4, 0x1644, 0, 0, BCM5700A6 ,128,32},
	{0x14e4, 0x1644, 0x14e4, 0x2, 0, 0, BCM5700T6 ,128,32},
	{0x14e4, 0x1644, 0x14e4, 0x3, 0, 0, BCM5700A9 ,128,32},
	{0x14e4, 0x1644, 0x14e4, 0x4, 0, 0, BCM5700T9 ,128,32},
	{0x14e4, 0x1644, 0x1028, 0xd1, 0, 0, BCM5700 ,128,32},
	{0x14e4, 0x1644, 0x1028, 0x0106, 0, 0, BCM5700 ,128,32},
	{0x14e4, 0x1644, 0x1028, 0x0109, 0, 0, BCM5700 ,128,32},
	{0x14e4, 0x1644, 0x1028, 0x010a, 0, 0, BCM5700 ,128,32},
	{0x14e4, 0x1644, 0x10b7, 0x1000, 0, 0, TC996T ,128,32},
	{0x14e4, 0x1644, 0x10b7, 0x1001, 0, 0, TC996ST ,128,32},
	{0x14e4, 0x1644, 0x10b7, 0x1002, 0, 0, TC996SSX ,128,32},
	{0x14e4, 0x1644, 0x10b7, 0x1003, 0, 0, TC997T ,128,32},
	{0x14e4, 0x1644, 0x10b7, 0x1005, 0, 0, TC997SX ,128,32},
	{0x14e4, 0x1644, 0x10b7, 0x1008, 0, 0, TC942BR01 ,128,32},
	{0x14e4, 0x1644, PCI_ANY_ID, PCI_ANY_ID, 0, 0, BCM5700 ,128,32},
	{0x14e4, 0x1645, 0x14e4, 1, 0, 0, BCM5701A5 ,128,32},
	{0x14e4, 0x1645, 0x14e4, 5, 0, 0, BCM5701T1 ,128,32},
	{0x14e4, 0x1645, 0x14e4, 6, 0, 0, BCM5701T8 ,128,32},
	{0x14e4, 0x1645, 0x14e4, 7, 0, 0, BCM5701A7 ,128,32},
	{0x14e4, 0x1645, 0x14e4, 8, 0, 0, BCM5701A10 ,128,32},
	{0x14e4, 0x1645, 0x14e4, 0x8008, 0, 0, BCM5701A12 ,128,32},
	{0x14e4, 0x1645, 0x0e11, 0xc1, 0, 0, NC6770 ,128,32},
	{0x14e4, 0x1645, 0x0e11, 0x7c, 0, 0, NC7770 ,128,32},
	{0x14e4, 0x1645, 0x0e11, 0x85, 0, 0, NC7780 ,128,32},
	{0x14e4, 0x1645, 0x1028, 0x0121, 0, 0, BCM5701 ,128,32},
	{0x14e4, 0x1645, 0x10b7, 0x1004, 0, 0, TC996SX ,128,32},
	{0x14e4, 0x1645, 0x10b7, 0x1006, 0, 0, TC996BT ,128,32},
	{0x14e4, 0x1645, 0x10b7, 0x1007, 0, 0, TC1000T ,128,32},
	{0x14e4, 0x1645, 0x10b7, 0x1008, 0, 0, TC940BR01 ,128,32},
	{0x14e4, 0x1645, PCI_ANY_ID, PCI_ANY_ID, 0, 0, BCM5701 ,128,32},
	{0x14e4, 0x1646, 0x14e4, 0x8009, 0, 0, BCM5702 ,128,32},
	{0x14e4, 0x1646, 0x0e11, 0xbb, 0, 0, NC7760 ,128,32},
	{0x14e4, 0x1646, PCI_ANY_ID, PCI_ANY_ID, 0, 0, BCM5702 ,128,32},
	{0x14e4, 0x16a6, 0x14e4, 0x8009, 0, 0, BCM5702 ,128,32},
	{0x14e4, 0x16a6, 0x0e11, 0xbb, 0, 0, NC7760 ,128,32},
	{0x14e4, 0x16a6, PCI_ANY_ID, PCI_ANY_ID, 0, 0, BCM5702 ,128,32},
	{0x14e4, 0x1647, 0x14e4, 0x0009, 0, 0, BCM5703 ,128,32},
	{0x14e4, 0x1647, 0x14e4, 0x000a, 0, 0, BCM5703A31 ,128,32},
	{0x14e4, 0x1647, 0x14e4, 0x000b, 0, 0, BCM5703 ,128,32},
	{0x14e4, 0x1647, 0x14e4, 0x800a, 0, 0, BCM5703 ,128,32},
	{0x14e4, 0x1647, 0x0e11, 0x9a, 0, 0, NC7770 ,128,32},
	{0x14e4, 0x1647, 0x0e11, 0x99, 0, 0, NC7780 ,128,32},
	{0x14e4, 0x1647, PCI_ANY_ID, PCI_ANY_ID, 0, 0, BCM5703 ,128,32},
	{0x14e4, 0x16a7, 0x14e4, 0x0009, 0, 0, BCM5703 ,128,32},
	{0x14e4, 0x16a7, 0x14e4, 0x000a, 0, 0, BCM5703A31 ,128,32},
	{0x14e4, 0x16a7, 0x14e4, 0x000b, 0, 0, BCM5703 ,128,32},
	{0x14e4, 0x16a7, 0x14e4, 0x800a, 0, 0, BCM5703 ,128,32},
	{0x14e4, 0x16a7, 0x0e11, 0x9a, 0, 0, NC7770 ,128,32},
	{0x14e4, 0x16a7, 0x0e11, 0x99, 0, 0, NC7780 ,128,32},
	{0x14e4, 0x16a7, PCI_ANY_ID, PCI_ANY_ID, 0, 0, BCM5703 ,128,32}
};

#define n570xDevices   (sizeof(bcm570xDevices)/sizeof(bcm570xDevices[0]))


/*
 * Allocate a packet buffer from the bcm570x packet pool.
 */
void *
bcm570xPktAlloc(int u, int pksize)
{
    return malloc(pksize);
}

/*
 * Free a packet previously allocated from the bcm570x packet
 * buffer pool.
 */
void
bcm570xPktFree(int u, void *p)
{
    free(p);
}

int
bcm570xReplenishRxBuffers(PUM_DEVICE_BLOCK pUmDevice)
{
    PLM_PACKET pPacket;
    PUM_PACKET pUmPacket;
    void *skb;
    int queue_rx = 0;
    int ret = 0;

    while ((pUmPacket = (PUM_PACKET)
	    QQ_PopHead(&pUmDevice->rx_out_of_buf_q.Container)) != 0) {

	pPacket = (PLM_PACKET) pUmPacket;

	/* reuse an old skb */
	if (pUmPacket->skbuff) {
	    QQ_PushTail(&pDevice->RxPacketFreeQ.Container, pPacket);
	    queue_rx = 1;
	    continue;
	}
	if ( ( skb = bcm570xPktAlloc(pUmDevice->index,
				     pPacket->u.Rx.RxBufferSize + 2)) == 0) {
	    QQ_PushHead(&pUmDevice->rx_out_of_buf_q.Container,pPacket);
	    printf("NOTICE: Out of RX memory.\n");
	    ret = 1;
	    break;
	}

	pUmPacket->skbuff = skb;
	QQ_PushTail(&pDevice->RxPacketFreeQ.Container, pPacket);
	queue_rx = 1;
    }

    if (queue_rx) {
	LM_QueueRxPackets(pDevice);
    }

    return ret;
}

/*
 * Probe, Map, and Init 570x device.
 */
int eth_init(bd_t *bis)
{
    int i, rv, devFound = FALSE;
    pci_dev_t  devbusfn;
    unsigned short status;

    /* Find PCI device, if it exists, configure ...  */
    for( i = 0; i < n570xDevices; i++){
	devbusfn = pci_find_device(bcm570xDevices[i].vendor_id,
				   bcm570xDevices[i].device_id, 0);
	if(devbusfn == -1) {
	    continue; /* No device of that vendor/device ID */
	} else {

	    /* Set ILINE */
	    pci_write_config_byte(devbusfn,
				  PCI_INTERRUPT_LINE, BCM570X_ILINE);

	    /*
	     * 0x10 - 0x14 define one 64-bit MBAR.
	     * 0x14 is the higher-order address bits of the BAR.
	     */
	    pci_write_config_dword(devbusfn,
				   PCI_BASE_ADDRESS_1, 0);

	    ioBase = BCM570X_MBAR;

	    pci_write_config_dword(devbusfn,
				   PCI_BASE_ADDRESS_0, ioBase);

	    /*
	     * Enable PCI memory, IO, and Master -- don't
	     * reset any status bits in doing so.
	     */
	    pci_read_config_word(devbusfn,
				 PCI_COMMAND, &status);

	    status |= PCI_COMMAND_MEMORY|PCI_COMMAND_MASTER;

	    pci_write_config_word(devbusfn,
				  PCI_COMMAND, status);

	    printf("\n%s: bus %d, device %d, function %d: MBAR=0x%x\n",
		   board_info[bcm570xDevices[i].board_id].name,
		   PCI_BUS(devbusfn),
		   PCI_DEV(devbusfn),
		   PCI_FUNC(devbusfn),
		   ioBase);

	    /* Allocate once, but always clear on init */
	    if (!pDevice) {
		pDevice = malloc(sizeof(UM_DEVICE_BLOCK));
		pUmDevice = (PUM_DEVICE_BLOCK)pDevice;
		memset(pDevice, 0x0, sizeof(UM_DEVICE_BLOCK));
	    }

	    /* Configure pci dev structure */
	    pUmDevice->pdev = devbusfn;
	    pUmDevice->index = 0;
	    pUmDevice->tx_pkt = 0;
	    pUmDevice->rx_pkt = 0;
	    devFound = TRUE;
	    break;
	}
    }

    if(!devFound){
	printf("eth_init: FAILURE: no BCM570x Ethernet devices found.\n");
	return -1;
    }

    /* Setup defaults for chip */
    pDevice->TaskToOffload = LM_TASK_OFFLOAD_NONE;

    if (pDevice->ChipRevId == T3_CHIP_ID_5700_B0) {
	pDevice->TaskToOffload = LM_TASK_OFFLOAD_NONE;
    } else {

	if (rx_checksum[i]) {
	    pDevice->TaskToOffload |=
		LM_TASK_OFFLOAD_RX_TCP_CHECKSUM |
		LM_TASK_OFFLOAD_RX_UDP_CHECKSUM;
	}

	if (tx_checksum[i]) {
	    pDevice->TaskToOffload |=
		LM_TASK_OFFLOAD_TX_TCP_CHECKSUM |
		LM_TASK_OFFLOAD_TX_UDP_CHECKSUM;