/*
- * 3c90x.c -- This file implements the 3c90x driver for etherboot. Written
- * by Greg Beeley, Greg.Beeley@LightSys.org. Modified by Steve Smith,
- * Steve.Smith@Juno.Com. Alignment bug fix Neil Newell (nn@icenoir.net).
+ * 3c90x.c
+ * NetWatch
*
- * This program Copyright (C) 1999 LightSys Technology Services, Inc.
- * Portions Copyright (C) 1999 Steve Smith
+ * A ring buffer-based, bus-mastering Ethernet driver.
+ *
+ * Derived from Etherboot's 3c90x.c, which is
+ * Copyright (C) 1999 LightSys Technology Services, Inc.
+ * Portions Copyright (C) 1999 Steve Smith
*
* This program may be re-distributed in source or binary form, modified,
* sold, or copied for any purpose, provided that the above copyright message
* PURPOSE or MERCHANTABILITY. Please read the associated documentation
* "3c90x.txt" before compiling and using this driver.
*
- * --------
- *
- * Program written with the assistance of the 3com documentation for
- * the 3c905B-TX card, as well as with some assistance from the 3c59x
- * driver Donald Becker wrote for the Linux kernel, and with some assistance
- * from the remainder of the Etherboot distribution.
- *
* REVISION HISTORY:
*
* v0.10 1-26-1998 GRB Initial implementation.
* Re-wrote poll and transmit for
* better error recovery and heavy
* network traffic operation
- * v2.01 5-26-2003 NN Fixed driver alignment issue which
- * caused system lockups if driver structures
- * not 8-byte aligned.
+ * v2.01 5-26-2003 NN Fixed driver alignment issue which
+ * caused system lockups if driver structures
+ * not 8-byte aligned.
+ * NetWatch0 12-07-2008 JAW Taken out back and shot.
*
*/
#include <paging.h>
#define XCVR_MAGIC (0x5A00)
-/** any single transmission fails after 16 collisions or other errors
- ** this is the number of times to retry the transmission -- this should
- ** be plenty
- **/
-#define XMIT_RETRIES 5
/*** Register definitions for the 3c905 ***/
enum Registers
segment_t segments[64];
} rxdesc_t __attribute__ ((aligned(8)));
-/*** Global variables ***/
-static struct
- {
- unsigned int is3c556;
- unsigned char isBrev;
- unsigned char CurrentWindow;
- unsigned int IOAddr;
- unsigned char HWAddr[ETH_ALEN];
- }
- INF_3C90X;
-
-static struct nic nic;
-static txdesc_t txdesc;
-
-#define _outl(v,a) outl((a),(v))
-#define _outw(v,a) outw((a),(v))
-#define _outb(v,a) outb((a),(v))
-
-static int _issue_command(int ioaddr, int cmd, int param)
+typedef struct {
+ struct nic nic;
+ int is3c556;
+ int isBrev;
+ int curwnd;
+ int ioaddr;
+} nic_3c90x_t;
+
+static nic_3c90x_t _nic;
+
+#define _inb(n,a) (inb((n)->ioaddr + (a)))
+#define _inw(n,a) (inw((n)->ioaddr + (a)))
+#define _inl(n,a) (inl((n)->ioaddr + (a)))
+
+#define _outb(n,a,d) (outb((n)->ioaddr + (a), (d)))
+#define _outw(n,a,d) (outw((n)->ioaddr + (a), (d)))
+#define _outl(n,a,d) (outl((n)->ioaddr + (a), (d)))
+
+
+static int _issue_command(nic_3c90x_t *nic, int cmd, int param)
{
- outw(ioaddr + regCommandIntStatus_w, (cmd << 11) | param);
+ _outw(nic, regCommandIntStatus_w, (cmd << 11) | param);
- while (inw(ioaddr + regCommandIntStatus_w) & INT_CMDINPROGRESS)
+ while (_inw(nic, regCommandIntStatus_w) & INT_CMDINPROGRESS)
;
return 0;
/*** a3c90x_internal_SetWindow: selects a register window set.
***/
-static int _set_window(int ioaddr, int window)
+static int _set_window(nic_3c90x_t *nic, int window)
{
- if (INF_3C90X.CurrentWindow == window)
+ if (nic->curwnd == window)
return 0;
- _issue_command(ioaddr, cmdSelectRegisterWindow, window);
- INF_3C90X.CurrentWindow = window;
+ _issue_command(nic, cmdSelectRegisterWindow, window);
+ nic->curwnd = window;
return 0;
}
-/*** a3c90x_internal_ReadEeprom - read data from the serial eeprom.
+/*** _read_eeprom - read data from the serial eeprom.
***/
static unsigned short
-a3c90x_internal_ReadEeprom(int ioaddr, int address)
+_read_eeprom(nic_3c90x_t *nic, int address)
{
unsigned short val;
/** Select correct window **/
- _set_window(INF_3C90X.IOAddr, winEepromBios0);
+ _set_window(nic, winEepromBios0);
/** Make sure the eeprom isn't busy **/
do
for (i = 0; i < 165; i++)
inb(0x80); /* wait 165 usec */
}
- while(0x8000 & inw(ioaddr + regEepromCommand_0_w));
+ while(0x8000 & _inw(nic, regEepromCommand_0_w));
/** Read the value. **/
- if (INF_3C90X.is3c556)
- _outw(address + (0x230), ioaddr + regEepromCommand_0_w);
+ if (nic->is3c556)
+ _outw(nic, regEepromCommand_0_w, address + 0x230);
else
- _outw(address + 0x80, ioaddr + regEepromCommand_0_w);
+ _outw(nic, regEepromCommand_0_w, address + 0x80);
do
{
for (i = 0; i < 165; i++)
inb(0x80); /* wait 165 usec */
}
- while(0x8000 & inw(ioaddr + regEepromCommand_0_w));
- val = inw(ioaddr + regEepromData_0_w);
+ while(0x8000 & _inw(nic, regEepromCommand_0_w));
+ val = _inw(nic, regEepromData_0_w);
return val;
}
-#ifdef CFG_3C90X_BOOTROM_FIX
-/*** a3c90x_internal_WriteEepromWord - write a physical word of
- *** data to the onboard serial eeprom (not the BIOS prom, but the
- *** nvram in the card that stores, among other things, the MAC
- *** address).
- ***/
-static int
-a3c90x_internal_WriteEepromWord(int ioaddr, int address, unsigned short value)
- {
- /** Select register window **/
- _set_window(ioaddr, winEepromBios0);
-
- /** Verify Eeprom not busy **/
- while((1<<15) & inw(ioaddr + regEepromCommand_0_w));
-
- /** Issue WriteEnable, and wait for completion. **/
- _outw(0x30, ioaddr + regEepromCommand_0_w);
- while((1<<15) & inw(ioaddr + regEepromCommand_0_w));
-
- /** Issue EraseRegister, and wait for completion. **/
- _outw(address + ((0x03)<<6), ioaddr + regEepromCommand_0_w);
- while((1<<15) & inw(ioaddr + regEepromCommand_0_w));
-
- /** Send the new data to the eeprom, and wait for completion. **/
- _outw(value, ioaddr + regEepromData_0_w);
- _outw(0x30, ioaddr + regEepromCommand_0_w);
- while((1<<15) & inw(ioaddr + regEepromCommand_0_w));
-
- /** Burn the new data into the eeprom, and wait for completion. **/
- _outw(address + ((0x01)<<6), ioaddr + regEepromCommand_0_w);
- while((1<<15) & inw(ioaddr + regEepromCommand_0_w));
-
- return 0;
- }
-#endif
-
-#ifdef CFG_3C90X_BOOTROM_FIX
-/*** a3c90x_internal_WriteEeprom - write data to the serial eeprom,
- *** and re-compute the eeprom checksum.
- ***/
-static int
-a3c90x_internal_WriteEeprom(int ioaddr, int address, unsigned short value)
- {
- int cksum = 0,v;
- int i;
- int maxAddress, cksumAddress;
-
- if (INF_3C90X.isBrev)
- {
- maxAddress=0x1f;
- cksumAddress=0x20;
- }
- else
- {
- maxAddress=0x16;
- cksumAddress=0x17;
- }
-
- /** Write the value. **/
- if (a3c90x_internal_WriteEepromWord(ioaddr, address, value) == -1)
- return -1;
-
- /** Recompute the checksum. **/
- for(i=0;i<=maxAddress;i++)
- {
- v = a3c90x_internal_ReadEeprom(ioaddr, i);
- cksum ^= (v & 0xFF);
- cksum ^= ((v>>8) & 0xFF);
- }
- /** Write the checksum to the location in the eeprom **/
- if (a3c90x_internal_WriteEepromWord(ioaddr, cksumAddress, cksum) == -1)
- return -1;
-
- return 0;
- }
-#endif
-
+#if 0
/*** a3c90x_reset: exported function that resets the card to its default
*** state. This is so the Linux driver can re-set the card up the way
*** it wants to. If CFG_3C90X_PRESERVE_XCVR is defined, then the reset will
*** not alter the selected transceiver that we used to download the boot
*** image.
***/
-static void a3c90x_reset(void)
- {
+static void _reset(nic_3c90x_t *nic)
+{
/** Send the reset command to the card **/
outputf("3c90x: issuing RESET");
- _issue_command(INF_3C90X.IOAddr, cmdGlobalReset, 0);
+ _issue_command(nic, cmdGlobalReset, 0);
/** global reset command resets station mask, non-B revision cards
** require explicit reset of values
**/
- _set_window(INF_3C90X.IOAddr, winAddressing2);
- _outw(0, INF_3C90X.IOAddr + regStationMask_2_3w+0);
- _outw(0, INF_3C90X.IOAddr + regStationMask_2_3w+2);
- _outw(0, INF_3C90X.IOAddr + regStationMask_2_3w+4);
+ _set_window(nic, winAddressing2);
+ _outw(nic, regStationMask_2_3w+0, 0);
+ _outw(nic, regStationMask_2_3w+2, 0);
+ _outw(nic, regStationMask_2_3w+4, 0);
/** Issue transmit reset, wait for command completion **/
- _issue_command(INF_3C90X.IOAddr, cmdTxReset, 0);
- if (! INF_3C90X.isBrev)
- _outb(0x01, INF_3C90X.IOAddr + regTxFreeThresh_b);
- _issue_command(INF_3C90X.IOAddr, cmdTxEnable, 0);
+ _issue_command(nic, cmdTxReset, 0);
+ if (!nic->isBrev)
+ _outb(nic, regTxFreeThresh_b, 0x01);
+ _issue_command(nic, cmdTxEnable, 0);
/**
** reset of the receiver on B-revision cards re-negotiates the link
** takes several seconds (a computer eternity)
**/
- if (INF_3C90X.isBrev)
- _issue_command(INF_3C90X.IOAddr, cmdRxReset, 0x04);
+ if (nic->isBrev)
+ _issue_command(nic, cmdRxReset, 0x04);
else
- _issue_command(INF_3C90X.IOAddr, cmdRxReset, 0x00);
- while (inw(INF_3C90X.IOAddr + regCommandIntStatus_w) & INT_CMDINPROGRESS)
- ;
- _issue_command(INF_3C90X.IOAddr, cmdRxEnable, 0);
+ _issue_command(nic, cmdRxReset, 0x00);
+ _issue_command(nic, cmdRxEnable, 0);
- _issue_command(INF_3C90X.IOAddr, cmdSetInterruptEnable, 0);
+ _issue_command(nic, cmdSetInterruptEnable, 0);
/** enable rxComplete and txComplete **/
- _issue_command(INF_3C90X.IOAddr, cmdSetIndicationEnable, 0x0014);
+ _issue_command(nic, cmdSetIndicationEnable, 0x0014);
/** acknowledge any pending status flags **/
- _issue_command(INF_3C90X.IOAddr, cmdAcknowledgeInterrupt, 0x661);
+ _issue_command(nic, cmdAcknowledgeInterrupt, 0x661);
return;
- }
+}
+#endif
+/***************************** Transmit routines *****************************/
+#define XMIT_BUFS 8
-/*** a3c90x_transmit: exported function that transmits a packet. Does not
- *** return any particular status. Parameters are:
- *** dest_addr[6] - destination address, ethernet;
- *** proto - protocol type (ARP, IP, etc);
- *** size - size of the non-header part of the packet that needs transmitted;
- *** pkt - the pointer to the packet data itself.
- ***/
-static void _transmit(struct pbuf *p)
+static txdesc_t txdescs[XMIT_BUFS];
+static struct pbuf *txpbufs[XMIT_BUFS] = {0,};
+
+/* txcons is the index into the ring buffer of the last packet that the
+ * 3c90x was seen processing, or -1 if the 3c90x was idle.
+ */
+static int txcons = -1;
+
+/* txprod is the index of the _next_ buffer that the driver will write into. */
+static int txprod = 0;
+
+/* _transmit adds a packet to the transmit ring buffer. If no space is
+ * available in the buffer, then _transmit blocks until a packet has been
+ * transmitted.
+ */
+static void _transmit(struct nic *_nic, struct pbuf *p)
{
+ nic_3c90x_t *nic = (nic_3c90x_t *)_nic;
unsigned char status;
- static struct pbuf *oldpbuf = NULL;
- unsigned int n, len;
+ int len, n;
- if (oldpbuf)
+ /* Wait for there to be space. */
+ if (txcons == txprod)
{
int i = 0;
- while (!(inw(INF_3C90X.IOAddr + regCommandIntStatus_w) & INT_TXCOMPLETE) && oneshot_running())
+
+ outputf("3c90x: txbuf full, waiting for space...");
+ while (_inl(nic, regDnListPtr_l) != 0)
i++;
- if (i)
- outputf("3c90x: had to wait %d loops to tx", i);
- if (!(inw(INF_3C90X.IOAddr + regCommandIntStatus_w) & INT_TXCOMPLETE))
+ outputf("3c90x: took %d iters", i);
+ }
+
+ /* Stall the download engine so it doesn't bother us. */
+ _issue_command(nic, cmdStallCtl, 2 /* Stall download */);
+
+ /* Clean up old txcons. */
+ if (txcons != -1)
+ {
+ unsigned long curp = _inl(nic, regDnListPtr_l);
+ int end;
+
+ if (curp == 0)
+ end = txprod;
+ else
+ end = (curp - v2p(txdescs)) / sizeof(txdescs[0]);
+
+ while (txcons != end)
{
- outputf("3c90x: tx timeout? txstat %02x", inb(INF_3C90X.IOAddr + regTxStatus_b));
- outputf("3c90x: Gen sts %04x", inw(INF_3C90X.IOAddr + regCommandIntStatus_w));
+ pbuf_free(txpbufs[txcons]);
+ txpbufs[txcons] = NULL;
+ txdescs[txcons].hdr = 0;
+ txdescs[txcons].next = 0;
+ txcons = (txcons + 1) % XMIT_BUFS;
}
- status = inb(INF_3C90X.IOAddr + regTxStatus_b);
- outb(INF_3C90X.IOAddr + regTxStatus_b, 0x00);
- pbuf_free(oldpbuf);
- oldpbuf = NULL;
+ if (txcons == txprod)
+ txcons = -1;
+ }
+
+ /* Look at the TX status */
+ status = _inb(nic, regTxStatus_b);
+ if (status)
+ {
+ outputf("3c90x: error: the nus.");
+ _outb(nic, regTxStatus_b, 0x00);
}
- _issue_command(INF_3C90X.IOAddr, cmdStallCtl, 2 /* Stall download */);
-
- /** Setup the DPD (download descriptor) **/
- txdesc.next = 0;
+ /* Set up the new txdesc. */
+ txdescs[txprod].next = 0;
len = 0;
n = 0;
- oldpbuf = p;
+ txpbufs[txprod] = p;
+ pbuf_ref(p);
for (; p; p = p->next)
{
- txdesc.segments[n].addr = v2p(p->payload);
- txdesc.segments[n].len = p->len | (p->next ? 0 : (1 << 31));
+ txdescs[txprod].segments[n].addr = v2p(p->payload);
+ txdescs[txprod].segments[n].len = p->len | (p->next ? 0 : (1 << 31));
len += p->len;
- pbuf_ref(p);
n++;
}
- /** set notification for transmission completion (bit 15) **/
- txdesc.hdr = (len) | 0x8000;
+ txdescs[txprod].hdr = len; /* If we wanted completion notification, bit 15 */
- /** Send the packet **/
- outl(INF_3C90X.IOAddr + regDnListPtr_l, v2p(&txdesc));
- _issue_command(INF_3C90X.IOAddr, cmdStallCtl, 3 /* Unstall download */);
-
- oneshot_start_ms(10);
- while((inl(INF_3C90X.IOAddr + regDnListPtr_l) != 0) && oneshot_running())
- ;
- if (!oneshot_running())
+ /* Now link the new one in, after it's been set up. */
+ txdescs[(txprod + XMIT_BUFS - 1) % XMIT_BUFS].next = v2p(&(txdescs[txprod]));
+
+ /* If the card is stopped, start it up again. */
+ if (_inl(nic, regDnListPtr_l) == 0)
{
- outputf("3c90x: Download engine pointer timeout");
- return;
+ _outl(nic, regDnListPtr_l, v2p(&(txdescs[txprod])));
+ txcons = txprod;
}
+
+ txprod = (txprod + 1) % XMIT_BUFS;
+
+ /* And let it proceed on its way. */
+ _issue_command(nic, cmdStallCtl, 3 /* Unstall download */);
#if 0
/** successful completion (sans "interrupt Requested" bit) **/
if (status & 0x02)
{
outputf("3c90x: Tx Reclaim Error (%hhX)", status);
- a3c90x_reset();
+ _reset(nic);
} else if (status & 0x04) {
outputf("3c90x: Tx Status Overflow (%hhX)", status);
for (i=0; i<32; i++)
- _outb(0x00, INF_3C90X.IOAddr + regTxStatus_b);
+ _outb(nic, regTxStatus_b, 0x00);
/** must re-enable after max collisions before re-issuing tx **/
- _issue_command(INF_3C90X.IOAddr, cmdTxEnable, 0);
+ _issue_command(nic, cmdTxEnable, 0);
} else if (status & 0x08) {
outputf("3c90x: Tx Max Collisions (%hhX)", status);
/** must re-enable after max collisions before re-issuing tx **/
- _issue_command(INF_3C90X.IOAddr, cmdTxEnable, 0);
+ _issue_command(nic, cmdTxEnable, 0);
} else if (status & 0x10) {
outputf("3c90x: Tx Underrun (%hhX)", status);
- a3c90x_reset();
+ _reset(nic);
} else if (status & 0x20) {
outputf("3c90x: Tx Jabber (%hhX)", status);
- a3c90x_reset();
+ _reset(nic);
} else if ((status & 0x80) != 0x80) {
outputf("3c90x: Internal Error - Incomplete Transmission (%hhX)", status);
- a3c90x_reset();
+ _reset(nic);
}
#endif
}
/***************************** Receive routines *****************************/
#define MAX_RECV_SIZE 1536
-#define RECV_BUFS 4
+#define RECV_BUFS 32
static rxdesc_t rxdescs[RECV_BUFS];
-static struct pbuf *pbufs[RECV_BUFS] = {0,};
+static struct pbuf *rxpbufs[RECV_BUFS] = {0,};
/* rxcons is the pointer to the receive descriptor that the ethernet card will
* write into next.
/* _recv_prepare fills the 3c90x's ring buffer with fresh pbufs from lwIP.
* The upload engine need not be stalled.
*/
-static void _recv_prepare(struct nic *nic)
+static void _recv_prepare(nic_3c90x_t *nic)
{
int oldprod;
oldprod = rxprod;
- while ((rxprod != rxcons) || !pbufs[rxprod])
+ while ((rxprod != rxcons) || !rxpbufs[rxprod])
{
int i;
struct pbuf *p;
- if (!pbufs[rxprod])
- pbufs[rxprod] = p = pbuf_alloc(PBUF_RAW, MAX_RECV_SIZE, PBUF_POOL);
+ if (!rxpbufs[rxprod])
+ rxpbufs[rxprod] = p = pbuf_alloc(PBUF_RAW, MAX_RECV_SIZE, PBUF_POOL);
else {
outputf("WARNING: 3c90x has pbuf in slot %d", rxprod);
- p = pbufs[rxprod];
+ p = rxpbufs[rxprod];
}
if (!p)
rxprod = (rxprod + 1) % RECV_BUFS;
}
- if (inl(INF_3C90X.IOAddr + regUpListPtr_l) == 0 && pbufs[oldprod]) /* Ran out of shit, and got new shit? */
+ if (_inl(nic, regUpListPtr_l) == 0 && rxpbufs[oldprod]) /* Ran out of shit, and got new shit? */
{
- outl(INF_3C90X.IOAddr + regUpListPtr_l, v2p(&rxdescs[oldprod]));
+ _outl(nic, regUpListPtr_l, v2p(&rxdescs[oldprod]));
outputf("3c90x: WARNING: Ran out of rx slots");
}
+ _issue_command(nic, cmdStallCtl, 1 /* Unstall upload */);
}
/* _recv polls the ring buffer to see if any packets are available. If any
* packets it received successfully. Whether _recv got any packets or not,
* _recv does not block, and reinitializes the ring buffer with fresh pbufs.
*/
-static int _recv(struct nic *nic)
+static int _recv(struct nic *_nic)
{
+ nic_3c90x_t *nic = (nic_3c90x_t *)_nic;
int errcode, n = 0;
struct pbuf *p;
outputf("3C90X: Packet error (%hX)",errcode>>16);
p = NULL;
- pbuf_free(pbufs[rxcons]); /* Bounce the old one before setting it up again. */
+ pbuf_free(rxpbufs[rxcons]); /* Bounce the old one before setting it up again. */
} else {
- p = pbufs[rxcons];
+ p = rxpbufs[rxcons];
pbuf_realloc(p, rxdescs[rxcons].status & 0x1FFF); /* Resize the packet to how large it actually is. */
}
- pbufs[rxcons] = NULL;
+ rxpbufs[rxcons] = NULL;
rxdescs[rxcons].status = 0;
rxcons = (rxcons + 1) % RECV_BUFS;
if (p)
{
- eth_recv(nic, p);
+ eth_recv(_nic, p);
n++;
}
}
return n;
}
-/*** a3c90x_disable: exported routine to disable the card. What's this for?
- *** the eepro100.c driver didn't have one, so I just left this one empty too.
- *** Ideas anyone?
- *** Must turn off receiver at least so stray packets will not corrupt memory
- *** [Ken]
- ***/
-void a3c90x_disable(struct dev *dev)
-{
- /* reset and disable merge */
- a3c90x_reset();
- /* Disable the receiver and transmitter. */
- _outw(cmdRxDisable, INF_3C90X.IOAddr + regCommandIntStatus_w);
- _outw(cmdTxDisable, INF_3C90X.IOAddr + regCommandIntStatus_w);
-}
-
-
/*** a3c90x_probe: exported routine to probe for the 3c905 card and perform
*** initialization. If this routine is called, the pci functions did find the
*** card. We just have to init it here.
***/
-static int a3c90x_probe(struct pci_dev * pci, void * data)
+static int _probe(struct pci_dev *pci, void *data)
{
- INF_3C90X.is3c556 = (pci->did == 0x6055);
-
- int i, c;
- unsigned short eeprom[0x100];
- unsigned int cfg;
- unsigned int mopt;
- unsigned int mstat;
- unsigned short linktype;
+ nic_3c90x_t *nic = &_nic;
+ int i, c;
+ unsigned short eeprom[0x100];
+ unsigned int cfg;
+ unsigned int mopt;
+ unsigned int mstat;
+ unsigned short linktype;
#define HWADDR_OFFSET 10
- unsigned long ioaddr = 0;
- for (i = 0; i < 6; i++) {
- if (pci->bars[i].type == PCI_BAR_IO) {
- ioaddr = pci->bars[i].addr;
- break;
- }
- }
-
- if (ioaddr == 0)
- {
- outputf("3c90x: Unable to find I/O address");
- return 0;
- }
-
- /* Power it on */
- pci_write16(pci->bus, pci->dev, pci->fn, 0xE0,
- pci_read16(pci->bus, pci->dev, pci->fn, 0xE0) & ~0x3);
+ unsigned long ioaddr = 0;
+ for (i = 0; i < 6; i++)
+ if (pci->bars[i].type == PCI_BAR_IO)
+ {
+ ioaddr = pci->bars[i].addr;
+ break;
+ }
+
+ if (ioaddr == 0)
+ {
+ outputf("3c90x: Unable to find I/O address");
+ return 0;
+ }
- outputf("3c90x: Picked I/O address %04x", ioaddr);
- pci_bother_add(pci);
- nic.ioaddr = ioaddr & ~3;
- nic.irqno = 0;
-
- INF_3C90X.IOAddr = ioaddr;
- INF_3C90X.CurrentWindow = 255;
- switch (a3c90x_internal_ReadEeprom(INF_3C90X.IOAddr, 0x03))
+ /* Power it on */
+ pci_write16(pci->bus, pci->dev, pci->fn, 0xE0,
+ pci_read16(pci->bus, pci->dev, pci->fn, 0xE0) & ~0x3);
+
+ outputf("3c90x: Picked I/O address %04x", ioaddr);
+ pci_bother_add(pci);
+ nic->nic.ioaddr = ioaddr & ~3;
+ nic->nic.irqno = 0;
+
+ nic->ioaddr = ioaddr;
+ nic->is3c556 = (pci->did == 0x6055);
+ nic->curwnd = 255;
+ switch (_read_eeprom(nic, 0x03))
{
case 0x9000: /** 10 Base TPO **/
case 0x9001: /** 10/100 T4 **/
case 0x9050: /** 10/100 TPO **/
case 0x9051: /** 10 Base Combo **/
- INF_3C90X.isBrev = 0;
+ nic->isBrev = 0;
break;
case 0x9004: /** 10 Base TPO **/
case 0x9056: /** 10/100 T4 **/
case 0x905A: /** 10 Base FX **/
default:
- INF_3C90X.isBrev = 1;
+ nic->isBrev = 1;
break;
}
- /** Load the EEPROM contents **/
- if (INF_3C90X.isBrev)
- {
- for(i=0;i<=/*0x20*/0x7F;i++)
- {
- eeprom[i] = a3c90x_internal_ReadEeprom(INF_3C90X.IOAddr, i);
- }
-
-#ifdef CFG_3C90X_BOOTROM_FIX
- /** Set xcvrSelect in InternalConfig in eeprom. **/
- /* only necessary for 3c905b revision cards with boot PROM bug!!! */
- a3c90x_internal_WriteEeprom(INF_3C90X.IOAddr, 0x13, 0x0160);
-#endif
-
-#ifdef CFG_3C90X_XCVR
- if (CFG_3C90X_XCVR == 255)
- {
- /** Clear the LanWorks register **/
- a3c90x_internal_WriteEeprom(INF_3C90X.IOAddr, 0x16, 0);
- }
+ /** Load the EEPROM contents **/
+ if (nic->isBrev)
+ for(i=0;i<=0x20;i++)
+ eeprom[i] = _read_eeprom(nic, i);
else
- {
- /** Set the selected permanent-xcvrSelect in the
- ** LanWorks register
- **/
- a3c90x_internal_WriteEeprom(INF_3C90X.IOAddr, 0x16,
- XCVR_MAGIC + ((CFG_3C90X_XCVR) & 0x000F));
- }
-#endif
- }
- else
- {
- for(i=0;i<=/*0x17*/0x7F;i++)
- {
- eeprom[i] = a3c90x_internal_ReadEeprom(INF_3C90X.IOAddr, i);
- }
+ for(i=0;i<=0x17;i++)
+ eeprom[i] = _read_eeprom(nic, i);
+
+ /** Retrieve the Hardware address and print it on the screen. **/
+ nic->nic.hwaddr[0] = eeprom[HWADDR_OFFSET + 0]>>8;
+ nic->nic.hwaddr[1] = eeprom[HWADDR_OFFSET + 0]&0xFF;
+ nic->nic.hwaddr[2] = eeprom[HWADDR_OFFSET + 1]>>8;
+ nic->nic.hwaddr[3] = eeprom[HWADDR_OFFSET + 1]&0xFF;
+ nic->nic.hwaddr[4] = eeprom[HWADDR_OFFSET + 2]>>8;
+ nic->nic.hwaddr[5] = eeprom[HWADDR_OFFSET + 2]&0xFF;
+ outputf("MAC Address = %02x:%02x:%02x:%02x:%02x:%02x",
+ nic->nic.hwaddr[0], nic->nic.hwaddr[1],
+ nic->nic.hwaddr[2], nic->nic.hwaddr[3],
+ nic->nic.hwaddr[4], nic->nic.hwaddr[5]);
+
+ /** 3C556: Invert MII power **/
+ if (nic->is3c556) {
+ _set_window(nic, winAddressing2);
+ _outw(nic, regResetOptions_2_w,
+ _inw(nic, regResetOptions_2_w) | 0x4000);
}
- /** Print identification message **/
-#ifdef CFG_3C90X_BOOTROM_FIX
- if (INF_3C90X.isBrev)
- {
- outputf("NOTE: 3c905b bootrom fix enabled; has side "
- "effects. See 3c90x.txt for info.");
- }
-#endif
-
- /** Retrieve the Hardware address and print it on the screen. **/
- INF_3C90X.HWAddr[0] = eeprom[HWADDR_OFFSET + 0]>>8;
- INF_3C90X.HWAddr[1] = eeprom[HWADDR_OFFSET + 0]&0xFF;
- INF_3C90X.HWAddr[2] = eeprom[HWADDR_OFFSET + 1]>>8;
- INF_3C90X.HWAddr[3] = eeprom[HWADDR_OFFSET + 1]&0xFF;
- INF_3C90X.HWAddr[4] = eeprom[HWADDR_OFFSET + 2]>>8;
- INF_3C90X.HWAddr[5] = eeprom[HWADDR_OFFSET + 2]&0xFF;
- outputf("MAC Address = %02x:%02x:%02x:%02x:%02x:%02x",
- INF_3C90X.HWAddr[0],
- INF_3C90X.HWAddr[1],
- INF_3C90X.HWAddr[2],
- INF_3C90X.HWAddr[3],
- INF_3C90X.HWAddr[4],
- INF_3C90X.HWAddr[5]);
-
- /** 3C556: Invert MII power **/
- if (INF_3C90X.is3c556) {
- unsigned int tmp;
- _set_window(INF_3C90X.IOAddr, winAddressing2);
- tmp = inw(INF_3C90X.IOAddr + regResetOptions_2_w);
- tmp |= 0x4000;
- _outw(tmp, INF_3C90X.IOAddr + regResetOptions_2_w);
- }
-
- /* Test if the link is good, if not continue */
- _set_window(INF_3C90X.IOAddr, winDiagnostics4);
- mstat = inw(INF_3C90X.IOAddr + regMediaStatus_4_w);
- if((mstat & (1<<11)) == 0) {
- outputf("Valid link not established");
- return 0;
- }
-
- /** Program the MAC address into the station address registers **/
- _set_window(INF_3C90X.IOAddr, winAddressing2);
- _outw(htons(eeprom[HWADDR_OFFSET + 0]), INF_3C90X.IOAddr + regStationAddress_2_3w);
- _outw(htons(eeprom[HWADDR_OFFSET + 1]), INF_3C90X.IOAddr + regStationAddress_2_3w+2);
- _outw(htons(eeprom[HWADDR_OFFSET + 2]), INF_3C90X.IOAddr + regStationAddress_2_3w+4);
- _outw(0, INF_3C90X.IOAddr + regStationMask_2_3w+0);
- _outw(0, INF_3C90X.IOAddr + regStationMask_2_3w+2);
- _outw(0, INF_3C90X.IOAddr + regStationMask_2_3w+4);
-
- /** Read the media options register, print a message and set default
- ** xcvr.
- **
- ** Uses Media Option command on B revision, Reset Option on non-B
- ** revision cards -- same register address
- **/
- _set_window(INF_3C90X.IOAddr, winTxRxOptions3);
- mopt = inw(INF_3C90X.IOAddr + regResetMediaOptions_3_w);
-
- /** mask out VCO bit that is defined as 10baseFL bit on B-rev cards **/
- if (! INF_3C90X.isBrev)
- {
- mopt &= 0x7F;
+ /* Test if the link is good; if not, bail out */
+ _set_window(nic, winDiagnostics4);
+ mstat = _inw(nic, regMediaStatus_4_w);
+ if((mstat & (1<<11)) == 0) {
+ outputf("3c90x: valid link not established");
+ return 0;
}
- outputf("Connectors present: ");
- c = 0;
- linktype = 0x0008;
- if (mopt & 0x01)
- {
- outputf(" 100Base-T4");
- linktype = 0x0006;
- }
- if (mopt & 0x04)
- {
- outputf(" 100Base-FX");
- linktype = 0x0005;
- }
- if (mopt & 0x10)
- {
- outputf(" 10Base-2");
- linktype = 0x0003;
- }
- if (mopt & 0x20)
+ /* Program the MAC address into the station address registers */
+ _set_window(nic, winAddressing2);
+ _outw(nic, regStationAddress_2_3w, htons(eeprom[HWADDR_OFFSET + 0]));
+ _outw(nic, regStationAddress_2_3w+2, htons(eeprom[HWADDR_OFFSET + 1]));
+ _outw(nic, regStationAddress_2_3w+4, htons(eeprom[HWADDR_OFFSET + 2]));
+ _outw(nic, regStationMask_2_3w+0, 0);
+ _outw(nic, regStationMask_2_3w+2, 0);
+ _outw(nic, regStationMask_2_3w+4, 0);
+
+ /** Read the media options register, print a message and set default
+ ** xcvr.
+ **
+ ** Uses Media Option command on B revision, Reset Option on non-B
+ ** revision cards -- same register address
+ **/
+ _set_window(nic, winTxRxOptions3);
+ mopt = _inw(nic, regResetMediaOptions_3_w);
+
+ /** mask out VCO bit that is defined as 10baseFL bit on B-rev cards **/
+ if (!nic->isBrev)
+ mopt &= 0x7F;
+
+ outputf("3c90x: connectors present: ");
+ c = 0;
+ linktype = 0x0008;
+ if (mopt & 0x01)
{
- outputf(" AUI");
- linktype = 0x0001;
+ outputf(" 100Base-T4");
+ linktype = 0x0006;
}
- if (mopt & 0x40)
+ if (mopt & 0x04)
{
- outputf(" MII");
- linktype = 0x0006;
+ outputf(" 100Base-FX");
+ linktype = 0x0005;
}
- if ((mopt & 0xA) == 0xA)
+ if (mopt & 0x10)
{
- outputf(" 10Base-T / 100Base-TX");
- linktype = 0x0008;
+ outputf(" 10Base-2");
+ linktype = 0x0003;
}
- else if ((mopt & 0xA) == 0x2)
+ if (mopt & 0x20)
{
- outputf(" 100Base-TX");
- linktype = 0x0008;
+ outputf(" AUI");
+ linktype = 0x0001;
}
- else if ((mopt & 0xA) == 0x8)
+ if (mopt & 0x40)
{
- outputf(" 10Base-T");
- linktype = 0x0008;
+ outputf(" MII");
+ linktype = 0x0006;
}
-
- /** Determine transceiver type to use, depending on value stored in
- ** eeprom 0x16
- **/
- if (INF_3C90X.isBrev)
+ if ((mopt & 0xA) == 0xA)
{
- if ((eeprom[0x16] & 0xFF00) == XCVR_MAGIC)
- {
- /** User-defined **/
- linktype = eeprom[0x16] & 0x000F;
- }
+ outputf(" 10Base-T / 100Base-TX");
+ linktype = 0x0008;
+ } else if ((mopt & 0xA) == 0x2) {
+ outputf(" 100Base-TX");
+ linktype = 0x0008;
+ } else if ((mopt & 0xA) == 0x8) {
+ outputf(" 10Base-T");
+ linktype = 0x0008;
}
- else
- {
-#ifdef CFG_3C90X_XCVR
- if (CFG_3C90X_XCVR != 255)
- linktype = CFG_3C90X_XCVR;
-#endif /* CFG_3C90X_XCVR */
- /** I don't know what MII MAC only mode is!!! **/
- if (linktype == 0x0009)
- {
- if (INF_3C90X.isBrev)
+ /** Determine transceiver type to use, depending on value stored in
+ ** eeprom 0x16
+ **/
+ if (nic->isBrev && ((eeprom[0x16] & 0xFF00) == XCVR_MAGIC))
+ linktype = eeprom[0x16] & 0x000F; /* User-defined */
+ else if (linktype == 0x0009) {
+ if (nic->isBrev)
outputf("WARNING: MII External MAC Mode only supported on B-revision "
- "cards!!!!\nFalling Back to MII Mode\n");
+ "cards!!!!\nFalling Back to MII Mode\n");
linktype = 0x0006;
- }
}
- /** enable DC converter for 10-Base-T **/
- if (linktype == 0x0003)
- {
- _issue_command(INF_3C90X.IOAddr, cmdEnableDcConverter, 0);
- }
-
- /** Set the link to the type we just determined. **/
- _set_window(INF_3C90X.IOAddr, winTxRxOptions3);
- cfg = inl(INF_3C90X.IOAddr + regInternalConfig_3_l);
- cfg &= ~(0xF<<20);
- cfg |= (linktype<<20);
- _outl(cfg, INF_3C90X.IOAddr + regInternalConfig_3_l);
-
- /** Now that we set the xcvr type, reset the Tx and Rx, re-enable. **/
- _issue_command(INF_3C90X.IOAddr, cmdTxReset, 0);
- if (!INF_3C90X.isBrev)
- _outb(0x01, INF_3C90X.IOAddr + regTxFreeThresh_b);
-
- _issue_command(INF_3C90X.IOAddr, cmdTxEnable, 0);
-
- /**
- ** reset of the receiver on B-revision cards re-negotiates the link
- ** takes several seconds (a computer eternity)
- **/
- if (INF_3C90X.isBrev)
- _issue_command(INF_3C90X.IOAddr, cmdRxReset, 0x04);
- else
- _issue_command(INF_3C90X.IOAddr, cmdRxReset, 0x00);
-
- /** Set the RX filter = receive only individual pkts & multicast & bcast. **/
- _issue_command(INF_3C90X.IOAddr, cmdSetRxFilter, 0x01 + 0x02 + 0x04);
-
- /* Stick some packets in the queue. */
- _recv_prepare(&nic);
-
- /* And light up the RX engine. */
- _issue_command(INF_3C90X.IOAddr, cmdRxEnable, 0);
-
- /**
- ** set Indication and Interrupt flags , acknowledge any IRQ's
- **/
- _issue_command(INF_3C90X.IOAddr, cmdSetInterruptEnable, 0);
- _issue_command(INF_3C90X.IOAddr, cmdSetIndicationEnable, 0x0014);
- _issue_command(INF_3C90X.IOAddr, cmdAcknowledgeInterrupt, 0x661);
-
- /* * Set our exported functions **/
- nic.recv = _recv;
- nic.transmit = _transmit;
- memcpy(nic.hwaddr, INF_3C90X.HWAddr, 6);
- eth_register(&nic);
-
- return 1;
+ /** enable DC converter for 10-Base-T **/
+ if (linktype == 0x0003)
+ _issue_command(nic, cmdEnableDcConverter, 0);
+
+ /** Set the link to the type we just determined. **/
+ _set_window(nic, winTxRxOptions3);
+ cfg = _inl(nic, regInternalConfig_3_l);
+ cfg &= ~(0xF<<20);
+ cfg |= (linktype<<20);
+ _outl(nic, regInternalConfig_3_l, cfg);
+
+ /* Reset and turn on the transmit engine. */
+ _issue_command(nic, cmdTxReset, 0);
+ if (!nic->isBrev)
+ _outb(nic, regTxFreeThresh_b, 0x01);
+ _issue_command(nic, cmdTxEnable, 0);
+
+ /* Reset and turn on the receive engine. */
+ _issue_command(nic, cmdRxReset, nic->isBrev ? 0x04 : 0x00);
+ _issue_command(nic, cmdSetRxFilter, 0x01 + 0x02 + 0x04); /* Individual, multicast, broadcast */
+ _recv_prepare(nic); /* Set up the ring buffer... */
+ _issue_command(nic, cmdRxEnable, 0); /* ... and light it up. */
+
+ /* Turn on interrupts, and ack any that are hanging out. */
+ _issue_command(nic, cmdSetInterruptEnable, 0);
+ _issue_command(nic, cmdSetIndicationEnable, 0x0014);
+ _issue_command(nic, cmdAcknowledgeInterrupt, 0x661);
+
+ /* Register with lwIP. */
+ nic->nic.recv = _recv;
+ nic->nic.transmit = _transmit;
+ eth_register(&(nic->nic));
+
+ return 1;
}
-static struct pci_id a3c90x_nics[] = {
-/* Original 90x revisions: */
-PCI_ROM(0x10b7, 0x6055, "3c556", "3C556"), /* Huricane */
-PCI_ROM(0x10b7, 0x9000, "3c905-tpo", "3Com900-TPO"), /* 10 Base TPO */
-PCI_ROM(0x10b7, 0x9001, "3c905-t4", "3Com900-Combo"), /* 10/100 T4 */
-PCI_ROM(0x10b7, 0x9050, "3c905-tpo100", "3Com905-TX"), /* 100 Base TX / 10/100 TPO */
-PCI_ROM(0x10b7, 0x9051, "3c905-combo", "3Com905-T4"), /* 100 Base T4 / 10 Base Combo */
-/* Newer 90xB revisions: */
-PCI_ROM(0x10b7, 0x9004, "3c905b-tpo", "3Com900B-TPO"), /* 10 Base TPO */
-PCI_ROM(0x10b7, 0x9005, "3c905b-combo", "3Com900B-Combo"), /* 10 Base Combo */
-PCI_ROM(0x10b7, 0x9006, "3c905b-tpb2", "3Com900B-2/T"), /* 10 Base TP and Base2 */
-PCI_ROM(0x10b7, 0x900a, "3c905b-fl", "3Com900B-FL"), /* 10 Base FL */
-PCI_ROM(0x10b7, 0x9055, "3c905b-tpo100", "3Com905B-TX"), /* 10/100 TPO */
-PCI_ROM(0x10b7, 0x9056, "3c905b-t4", "3Com905B-T4"), /* 10/100 T4 */
-PCI_ROM(0x10b7, 0x9058, "3c905b-9058", "3Com905B-9058"), /* Cyclone 10/100/BNC */
-PCI_ROM(0x10b7, 0x905a, "3c905b-fx", "3Com905B-FL"), /* 100 Base FX / 10 Base FX */
-/* Newer 90xC revision: */
-PCI_ROM(0x10b7, 0x9200, "3c905c-tpo", "3Com905C-TXM"), /* 10/100 TPO (3C905C-TXM) */
-PCI_ROM(0x10b7, 0x9202, "3c920b-emb-ati", "3c920B-EMB-WNM (ATI Radeon 9100 IGP)"), /* 3c920B-EMB-WNM (ATI Radeon 9100 IGP) */
-PCI_ROM(0x10b7, 0x9210, "3c920b-emb-wnm","3Com20B-EMB WNM"),
-PCI_ROM(0x10b7, 0x9800, "3c980", "3Com980-Cyclone"), /* Cyclone */
-PCI_ROM(0x10b7, 0x9805, "3c9805", "3Com9805"), /* Dual Port Server Cyclone */
-PCI_ROM(0x10b7, 0x7646, "3csoho100-tx", "3CSOHO100-TX"), /* Hurricane */
-PCI_ROM(0x10b7, 0x4500, "3c450", "3Com450 HomePNA Tornado"),
-PCI_ROM(0x10b7, 0x1201, "3c982a", "3Com982A"),
-PCI_ROM(0x10b7, 0x1202, "3c982b", "3Com982B"),
+static struct pci_id _pci_ids[] = {
+ /* Original 90x revisions: */
+ PCI_ROM(0x10b7, 0x6055, "3c556", "3C556"), /* Huricane */
+ PCI_ROM(0x10b7, 0x9000, "3c905-tpo", "3Com900-TPO"), /* 10 Base TPO */
+ PCI_ROM(0x10b7, 0x9001, "3c905-t4", "3Com900-Combo"), /* 10/100 T4 */
+ PCI_ROM(0x10b7, 0x9050, "3c905-tpo100", "3Com905-TX"), /* 100 Base TX / 10/100 TPO */
+ PCI_ROM(0x10b7, 0x9051, "3c905-combo", "3Com905-T4"), /* 100 Base T4 / 10 Base Combo */
+ /* Newer 90xB revisions: */
+ PCI_ROM(0x10b7, 0x9004, "3c905b-tpo", "3Com900B-TPO"), /* 10 Base TPO */
+ PCI_ROM(0x10b7, 0x9005, "3c905b-combo", "3Com900B-Combo"), /* 10 Base Combo */
+ PCI_ROM(0x10b7, 0x9006, "3c905b-tpb2", "3Com900B-2/T"), /* 10 Base TP and Base2 */
+ PCI_ROM(0x10b7, 0x900a, "3c905b-fl", "3Com900B-FL"), /* 10 Base FL */
+ PCI_ROM(0x10b7, 0x9055, "3c905b-tpo100", "3Com905B-TX"), /* 10/100 TPO */
+ PCI_ROM(0x10b7, 0x9056, "3c905b-t4", "3Com905B-T4"), /* 10/100 T4 */
+ PCI_ROM(0x10b7, 0x9058, "3c905b-9058", "3Com905B-9058"), /* Cyclone 10/100/BNC */
+ PCI_ROM(0x10b7, 0x905a, "3c905b-fx", "3Com905B-FL"), /* 100 Base FX / 10 Base FX */
+ /* Newer 90xC revision: */
+ PCI_ROM(0x10b7, 0x9200, "3c905c-tpo", "3Com905C-TXM"), /* 10/100 TPO (3C905C-TXM) */
+ PCI_ROM(0x10b7, 0x9202, "3c920b-emb-ati", "3c920B-EMB-WNM (ATI Radeon 9100 IGP)"), /* 3c920B-EMB-WNM (ATI Radeon 9100 IGP) */
+ PCI_ROM(0x10b7, 0x9210, "3c920b-emb-wnm","3Com20B-EMB WNM"),
+ PCI_ROM(0x10b7, 0x9800, "3c980", "3Com980-Cyclone"), /* Cyclone */
+ PCI_ROM(0x10b7, 0x9805, "3c9805", "3Com9805"), /* Dual Port Server Cyclone */
+ PCI_ROM(0x10b7, 0x7646, "3csoho100-tx", "3CSOHO100-TX"), /* Hurricane */
+ PCI_ROM(0x10b7, 0x4500, "3c450", "3Com450 HomePNA Tornado"),
+ PCI_ROM(0x10b7, 0x1201, "3c982a", "3Com982A"),
+ PCI_ROM(0x10b7, 0x1202, "3c982b", "3Com982B"),
};
struct pci_driver a3c90x_driver = {
- .name = "3C90X",
- .probe = a3c90x_probe,
- .ids = a3c90x_nics,
- .id_count = sizeof(a3c90x_nics)/sizeof(a3c90x_nics[0]),
+ .name = "3c90x",
+ .probe = _probe,
+ .ids = _pci_ids,
+ .id_count = sizeof(_pci_ids)/sizeof(_pci_ids[0]),
};
git.joshuawise.com / netwatch.git / blobdiff