*/
#include "etherboot-compat.h"
+#include "net.h"
#include <timer.h>
#include <io.h>
#include <pci.h>
+#include <pci-bother.h>
#include <minilib.h>
#include <output.h>
+#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 250
+#define XMIT_RETRIES 5
/*** Register definitions for the 3c905 ***/
enum Registers
#define INT_CMDINPROGRESS (1<<12)
#define INT_WINDOWNUMBER (7<<13)
+/* These structures are all 64-bit aligned, as needed for bus-mastering I/O. */
+typedef struct {
+ unsigned int addr;
+ unsigned int len;
+} segment_t __attribute__ ((aligned(8)));
-/*** TX descriptor ***/
-typedef struct
- {
- unsigned int DnNextPtr;
- unsigned int FrameStartHeader;
- unsigned int HdrAddr;
- unsigned int HdrLength;
- unsigned int DataAddr;
- unsigned int DataLength;
- }
- TXD __attribute__ ((aligned(8))); /* 64-bit aligned for bus mastering */
+typedef struct {
+ unsigned int next;
+ unsigned int hdr;
+ segment_t segments[64 /* XXX magic */];
+} txdesc_t __attribute__ ((aligned(8)));
/*** RX descriptor ***/
-typedef struct
- {
- unsigned int UpNextPtr;
- unsigned int UpPktStatus;
- unsigned int DataAddr;
- unsigned int DataLength;
- }
- RXD __attribute__ ((aligned(8))); /* 64-bit aligned for bus mastering */
+typedef struct {
+ unsigned int next;
+ unsigned int status;
+ segment_t segments[64];
+} rxdesc_t __attribute__ ((aligned(8)));
/*** Global variables ***/
static struct
unsigned char CurrentWindow;
unsigned int IOAddr;
unsigned char HWAddr[ETH_ALEN];
- TXD TransmitDPD;
- RXD ReceiveUPD;
}
INF_3C90X;
+static struct nic nic;
-/*** a3c90x_internal_IssueCommand: sends a command to the 3c90x card
- ***/
-static int
-a3c90x_internal_IssueCommand(int ioaddr, int cmd, int param)
- {
- unsigned int val;
+#define _outl(v,a) outl((a),(v))
+#define _outw(v,a) outw((a),(v))
+#define _outb(v,a) outb((a),(v))
- /** Build the cmd. **/
- val = cmd;
- val <<= 11;
- val |= param;
-
- /** Send the cmd to the cmd register **/
- outw(val, ioaddr + regCommandIntStatus_w);
+static int _issue_command(int ioaddr, int cmd, int param)
+{
+ outw(ioaddr + regCommandIntStatus_w, (cmd << 11) | param);
- /** Wait for the cmd to complete, if necessary **/
- while (inw(ioaddr + regCommandIntStatus_w) & INT_CMDINPROGRESS);
+ while (inw(ioaddr + regCommandIntStatus_w) & INT_CMDINPROGRESS)
+ ;
- return 0;
- }
+ return 0;
+}
/*** a3c90x_internal_SetWindow: selects a register window set.
***/
-static int
-a3c90x_internal_SetWindow(int ioaddr, int window)
- {
-
- /** Window already as set? **/
- if (INF_3C90X.CurrentWindow == window) return 0;
+static int _set_window(int ioaddr, int window)
+{
+ if (INF_3C90X.CurrentWindow == window)
+ return 0;
- /** Issue the window command. **/
- a3c90x_internal_IssueCommand(ioaddr, cmdSelectRegisterWindow, window);
+ _issue_command(ioaddr, cmdSelectRegisterWindow, window);
INF_3C90X.CurrentWindow = window;
- return 0;
- }
+ return 0;
+}
/*** a3c90x_internal_ReadEeprom - read data from the serial eeprom.
***/
static unsigned short
a3c90x_internal_ReadEeprom(int ioaddr, int address)
- {
- unsigned short val;
+{
+ unsigned short val;
/** Select correct window **/
- a3c90x_internal_SetWindow(INF_3C90X.IOAddr, winEepromBios0);
+ _set_window(INF_3C90X.IOAddr, winEepromBios0);
/** Make sure the eeprom isn't busy **/
- while((1<<15) & inw(ioaddr + regEepromCommand_0_w));
+ do
+ {
+ int i;
+ for (i = 0; i < 165; i++)
+ inb(0x80); /* wait 165 usec */
+ }
+ while(0x8000 & inw(ioaddr + regEepromCommand_0_w));
/** Read the value. **/
if (INF_3C90X.is3c556)
- {
- outw(address + (0x230), ioaddr + regEepromCommand_0_w);
- }
+ _outw(address + (0x230), ioaddr + regEepromCommand_0_w);
else
- {
- outw(address + ((0x02)<<6), ioaddr + regEepromCommand_0_w);
- }
-
- while((1<<15) & inw(ioaddr + regEepromCommand_0_w));
- val = inw(ioaddr + regEepromData_0_w);
+ _outw(address + 0x80, ioaddr + regEepromCommand_0_w);
- return val;
- }
+ do
+ {
+ int i;
+ for (i = 0; i < 165; i++)
+ inb(0x80); /* wait 165 usec */
+ }
+ while(0x8000 & inw(ioaddr + regEepromCommand_0_w));
+ val = inw(ioaddr + regEepromData_0_w);
+
+ return val;
+}
#ifdef CFG_3C90X_BOOTROM_FIX
a3c90x_internal_WriteEepromWord(int ioaddr, int address, unsigned short value)
{
/** Select register window **/
- a3c90x_internal_SetWindow(ioaddr, winEepromBios0);
+ _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);
+ _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);
+ _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);
+ _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);
+ _outw(address + ((0x01)<<6), ioaddr + regEepromCommand_0_w);
while((1<<15) & inw(ioaddr + regEepromCommand_0_w));
return 0;
***/
static void a3c90x_reset(void)
{
-#ifdef CFG_3C90X_PRESERVE_XCVR
- int cfg;
- /** Read the current InternalConfig value. **/
- a3c90x_internal_SetWindow(INF_3C90X.IOAddr, winTxRxOptions3);
- cfg = inl(INF_3C90X.IOAddr + regInternalConfig_3_l);
-#endif
-
/** Send the reset command to the card **/
- outputf("Issuing RESET:");
- a3c90x_internal_IssueCommand(INF_3C90X.IOAddr, cmdGlobalReset, 0);
-
- /** wait for reset command to complete **/
- while (inw(INF_3C90X.IOAddr + regCommandIntStatus_w) & INT_CMDINPROGRESS);
+ outputf("3c90x: issuing RESET");
+ _issue_command(INF_3C90X.IOAddr, cmdGlobalReset, 0);
/** global reset command resets station mask, non-B revision cards
** require explicit reset of values
**/
- a3c90x_internal_SetWindow(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);
-
-#ifdef CFG_3C90X_PRESERVE_XCVR
- /** Re-set the original InternalConfig value from before reset **/
- a3c90x_internal_SetWindow(INF_3C90X.IOAddr, winTxRxOptions3);
- outl(cfg, INF_3C90X.IOAddr + regInternalConfig_3_l);
-
- /** enable DC converter for 10-Base-T **/
- if ((cfg&0x0300) == 0x0300)
- {
- a3c90x_internal_IssueCommand(INF_3C90X.IOAddr, cmdEnableDcConverter, 0);
- }
-#endif
+ _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);
/** Issue transmit reset, wait for command completion **/
- a3c90x_internal_IssueCommand(INF_3C90X.IOAddr, cmdTxReset, 0);
- while (inw(INF_3C90X.IOAddr + regCommandIntStatus_w) & INT_CMDINPROGRESS)
- ;
+ _issue_command(INF_3C90X.IOAddr, cmdTxReset, 0);
if (! INF_3C90X.isBrev)
- outb(0x01, INF_3C90X.IOAddr + regTxFreeThresh_b);
- a3c90x_internal_IssueCommand(INF_3C90X.IOAddr, cmdTxEnable, 0);
+ _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)
- a3c90x_internal_IssueCommand(INF_3C90X.IOAddr, cmdRxReset, 0x04);
+ _issue_command(INF_3C90X.IOAddr, cmdRxReset, 0x04);
else
- a3c90x_internal_IssueCommand(INF_3C90X.IOAddr, cmdRxReset, 0x00);
- while (inw(INF_3C90X.IOAddr + regCommandIntStatus_w) & INT_CMDINPROGRESS);
- ;
- a3c90x_internal_IssueCommand(INF_3C90X.IOAddr, cmdRxEnable, 0);
+ _issue_command(INF_3C90X.IOAddr, cmdRxReset, 0x00);
+ while (inw(INF_3C90X.IOAddr + regCommandIntStatus_w) & INT_CMDINPROGRESS)
+ ;
+ _issue_command(INF_3C90X.IOAddr, cmdRxEnable, 0);
- a3c90x_internal_IssueCommand(INF_3C90X.IOAddr,
- cmdSetInterruptEnable, 0);
+ _issue_command(INF_3C90X.IOAddr, cmdSetInterruptEnable, 0);
/** enable rxComplete and txComplete **/
- a3c90x_internal_IssueCommand(INF_3C90X.IOAddr,
- cmdSetIndicationEnable, 0x0014);
+ _issue_command(INF_3C90X.IOAddr, cmdSetIndicationEnable, 0x0014);
/** acknowledge any pending status flags **/
- a3c90x_internal_IssueCommand(INF_3C90X.IOAddr,
- cmdAcknowledgeInterrupt, 0x661);
+ _issue_command(INF_3C90X.IOAddr, cmdAcknowledgeInterrupt, 0x661);
return;
}
+/***************************** 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
-a3c90x_transmit(const char *dest_addr, unsigned int proto,
- unsigned int size, const char *pkt)
- {
+static txdesc_t txdescs[XMIT_BUFS];
+static struct pbuf *txpbufs[XMIT_BUFS] = {0,};
- struct eth_hdr
- {
- unsigned char dst_addr[ETH_ALEN];
- unsigned char src_addr[ETH_ALEN];
- unsigned short type;
- } hdr;
+/* 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;
- unsigned char status;
- unsigned i, retries;
+/* txprod is the index of the _next_ buffer that the driver will write into. */
+static int txprod = 0;
- for (retries=0; retries < XMIT_RETRIES ; retries++)
+/* _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 pbuf *p)
+{
+ unsigned char status;
+ int len, n;
+
+ /* Wait for there to be space. */
+ if (txcons == txprod)
{
- /** Stall the download engine **/
- a3c90x_internal_IssueCommand(INF_3C90X.IOAddr, cmdStallCtl, 2);
-
- /** Make sure the card is not waiting on us **/
- inw(INF_3C90X.IOAddr + regCommandIntStatus_w);
- inw(INF_3C90X.IOAddr + regCommandIntStatus_w);
-
- while (inw(INF_3C90X.IOAddr+regCommandIntStatus_w) &
- INT_CMDINPROGRESS)
- ;
-
- /** Set the ethernet packet type **/
- hdr.type = htons(proto);
-
- /** Copy the destination address **/
- memcpy(hdr.dst_addr, dest_addr, ETH_ALEN);
-
- /** Copy our MAC address **/
- memcpy(hdr.src_addr, INF_3C90X.HWAddr, ETH_ALEN);
-
- /** Setup the DPD (download descriptor) **/
- INF_3C90X.TransmitDPD.DnNextPtr = 0;
- /** set notification for transmission completion (bit 15) **/
- INF_3C90X.TransmitDPD.FrameStartHeader = (size + sizeof(hdr)) | 0x8000;
- INF_3C90X.TransmitDPD.HdrAddr = virt_to_bus(&hdr);
- INF_3C90X.TransmitDPD.HdrLength = sizeof(hdr);
- INF_3C90X.TransmitDPD.DataAddr = virt_to_bus(pkt);
- INF_3C90X.TransmitDPD.DataLength = size + (1<<31);
-
- /** Send the packet **/
- outl(virt_to_bus(&(INF_3C90X.TransmitDPD)),
- INF_3C90X.IOAddr + regDnListPtr_l);
-
- /** End Stall and Wait for upload to complete. **/
- a3c90x_internal_IssueCommand(INF_3C90X.IOAddr, cmdStallCtl, 3);
- while(inl(INF_3C90X.IOAddr + regDnListPtr_l) != 0)
- ;
-
- /** Wait for NIC Transmit to Complete **/
- oneshot_start_ms(10); /* Give it 10 ms */
- while (!(inw(INF_3C90X.IOAddr + regCommandIntStatus_w)&0x0004) &&
- oneshot_running())
- ;
-
- if (!(inw(INF_3C90X.IOAddr + regCommandIntStatus_w)&0x0004))
- {
- outputf("3C90X: Tx Timeout");
- continue;
- }
-
+ int i = 0;
+
+ outputf("3c90x: txbuf full, waiting for space...");
+ while (inl(INF_3C90X.IOAddr + regDnListPtr_l) != 0)
+ i++;
+ outputf("3c90x: took %d iters", i);
+ }
+
+ /* Stall the download engine so it doesn't bother us. */
+ _issue_command(INF_3C90X.IOAddr, cmdStallCtl, 2 /* Stall download */);
+
+ /* Clean up old txcons. */
+ if (txcons != -1)
+ {
+ unsigned long curp = inl(INF_3C90X.IOAddr + regDnListPtr_l);
+ int end;
+
+ if (curp == 0)
+ end = txprod;
+ else
+ end = (curp - v2p(txdescs)) / sizeof(txdescs[0]);
+
+ while (txcons != end)
+ {
+ pbuf_free(txpbufs[txcons]);
+ txpbufs[txcons] = NULL;
+ txdescs[txcons].hdr = 0;
+ txdescs[txcons].next = 0;
+ txcons = (txcons + 1) % XMIT_BUFS;
+ }
+ if (txcons == txprod)
+ txcons = -1;
+ }
+
+ /* Look at the TX status */
status = inb(INF_3C90X.IOAddr + regTxStatus_b);
+ if (status)
+ {
+ outputf("3c90x: error: the nus.");
+ outb(INF_3C90X.IOAddr + regTxStatus_b, 0x00);
+ }
- /** acknowledge transmit interrupt by writing status **/
- outb(0x00, INF_3C90X.IOAddr + regTxStatus_b);
+ /* Set up the new txdesc. */
+ txdescs[txprod].next = 0;
+ len = 0;
+ n = 0;
+ txpbufs[txprod] = p;
+ for (; p; p = p->next)
+ {
+ 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++;
+ }
+ txdescs[txprod].hdr = len; /* If we wanted completion notification, bit 15 */
+
+ /* 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(INF_3C90X.IOAddr + regDnListPtr_l) == 0)
+ {
+ outl(INF_3C90X.IOAddr + regDnListPtr_l, v2p(&(txdescs[txprod])));
+ txcons = txprod;
+ }
+
+ txprod = (txprod + 1) % XMIT_BUFS;
+
+ /* And let it proceed on its way. */
+ _issue_command(INF_3C90X.IOAddr, cmdStallCtl, 3 /* Unstall download */);
+#if 0
/** successful completion (sans "interrupt Requested" bit) **/
if ((status & 0xbf) == 0x80)
- return;
+ return;
- outputf("3C90X: Status (%hhX)", status);
+ outputf("3c90x: Status (%hhX)", status);
/** check error codes **/
if (status & 0x02)
- {
- outputf("3C90X: Tx Reclaim Error (%hhX)", status);
- a3c90x_reset();
- }
- else if (status & 0x04)
- {
- outputf("3C90X: Tx Status Overflow (%hhX)", status);
- for (i=0; i<32; i++)
- outb(0x00, INF_3C90X.IOAddr + regTxStatus_b);
- /** must re-enable after max collisions before re-issuing tx **/
- a3c90x_internal_IssueCommand(INF_3C90X.IOAddr, cmdTxEnable, 0);
- }
- else if (status & 0x08)
- {
- outputf("3C90X: Tx Max Collisions (%hhX)", status);
- /** must re-enable after max collisions before re-issuing tx **/
- a3c90x_internal_IssueCommand(INF_3C90X.IOAddr, cmdTxEnable, 0);
- }
- else if (status & 0x10)
- {
- outputf("3C90X: Tx Underrun (%hhX)", status);
- a3c90x_reset();
- }
- else if (status & 0x20)
- {
- outputf("3C90X: Tx Jabber (%hhX)", status);
- a3c90x_reset();
- }
- else if ((status & 0x80) != 0x80)
- {
- outputf("3C90X: Internal Error - Incomplete Transmission (%hhX)",
- status);
- a3c90x_reset();
- }
+ {
+ outputf("3c90x: Tx Reclaim Error (%hhX)", status);
+ a3c90x_reset();
+ } else if (status & 0x04) {
+ outputf("3c90x: Tx Status Overflow (%hhX)", status);
+ for (i=0; i<32; i++)
+ _outb(0x00, INF_3C90X.IOAddr + regTxStatus_b);
+ /** must re-enable after max collisions before re-issuing tx **/
+ _issue_command(INF_3C90X.IOAddr, 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);
+ } else if (status & 0x10) {
+ outputf("3c90x: Tx Underrun (%hhX)", status);
+ a3c90x_reset();
+ } else if (status & 0x20) {
+ outputf("3c90x: Tx Jabber (%hhX)", status);
+ a3c90x_reset();
+ } else if ((status & 0x80) != 0x80) {
+ outputf("3c90x: Internal Error - Incomplete Transmission (%hhX)", status);
+ a3c90x_reset();
}
+#endif
+}
- /** failed after RETRY attempts **/
- outputf("Failed to send after %d retries", retries);
- return;
+/***************************** Receive routines *****************************/
+#define MAX_RECV_SIZE 1536
+#define RECV_BUFS 16
- }
+static rxdesc_t rxdescs[RECV_BUFS];
+static struct pbuf *rxpbufs[RECV_BUFS] = {0,};
+/* rxcons is the pointer to the receive descriptor that the ethernet card will
+ * write into next.
+ */
+static int rxcons = 0;
+/* rxprod is the pointer to the receive descriptor that the driver will
+ * allocate next.
+ */
+static int rxprod = 0;
-/*** a3c90x_poll: exported routine that waits for a certain length of time
- *** for a packet, and if it sees none, returns 0. This routine should
- *** copy the packet to nic->packet if it gets a packet and set the size
- *** in nic->packetlen. Return 1 if a packet was found.
- ***/
-static int
-a3c90x_poll(struct nic *nic, int retrieve)
- {
- int i, errcode;
+/* _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)
+{
+ int oldprod;
- if (!(inw(INF_3C90X.IOAddr + regCommandIntStatus_w)&0x0010))
+ oldprod = rxprod;
+ while ((rxprod != rxcons) || !rxpbufs[rxprod])
{
- return 0;
+ int i;
+ struct pbuf *p;
+
+ 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 = rxpbufs[rxprod];
+ }
+
+ if (!p)
+ {
+ outputf("3c90x: out of memory for rx pbuf?");
+ break;
+ }
+
+ rxdescs[rxprod].status = 0;
+ rxdescs[rxprod].next = 0;
+ for (i = 0; p; p = p->next, i++)
+ {
+ rxdescs[rxprod].segments[i].addr = v2p(p->payload);
+ rxdescs[rxprod].segments[i].len = p->len | (p->next ? 0 : (1 << 31));
+ }
+
+ /* Hook in the new one after and only after it's been fully set up. */
+ rxdescs[(rxprod + RECV_BUFS - 1) % RECV_BUFS].next = v2p(&(rxdescs[rxprod]));
+ rxprod = (rxprod + 1) % RECV_BUFS;
}
-
- if ( ! retrieve ) return 1;
-
- /** we don't need to acknowledge rxComplete -- the upload engine
- ** does it for us.
- **/
-
- /** Build the up-load descriptor **/
- INF_3C90X.ReceiveUPD.UpNextPtr = 0;
- INF_3C90X.ReceiveUPD.UpPktStatus = 0;
- INF_3C90X.ReceiveUPD.DataAddr = virt_to_bus(nic->packet);
- INF_3C90X.ReceiveUPD.DataLength = 1536 + (1<<31);
-
- /** Submit the upload descriptor to the NIC **/
- outl(virt_to_bus(&(INF_3C90X.ReceiveUPD)),
- INF_3C90X.IOAddr + regUpListPtr_l);
-
- /** Wait for upload completion (upComplete(15) or upError (14)) **/
- for(i=0;i<40000;i++);
- while((INF_3C90X.ReceiveUPD.UpPktStatus & ((1<<14) | (1<<15))) == 0)
- for(i=0;i<40000;i++);
-
- /** Check for Error (else we have good packet) **/
- if (INF_3C90X.ReceiveUPD.UpPktStatus & (1<<14))
+
+ if (inl(INF_3C90X.IOAddr + regUpListPtr_l) == 0 && rxpbufs[oldprod]) /* Ran out of shit, and got new shit? */
{
- errcode = INF_3C90X.ReceiveUPD.UpPktStatus;
- if (errcode & (1<<16))
- outputf("3C90X: Rx Overrun (%hX)",errcode>>16);
- else if (errcode & (1<<17))
- outputf("3C90X: Runt Frame (%hX)",errcode>>16);
- else if (errcode & (1<<18))
- outputf("3C90X: Alignment Error (%hX)",errcode>>16);
- else if (errcode & (1<<19))
- outputf("3C90X: CRC Error (%hX)",errcode>>16);
- else if (errcode & (1<<20))
- outputf("3C90X: Oversized Frame (%hX)",errcode>>16);
- else
- outputf("3C90X: Packet error (%hX)",errcode>>16);
- return 0;
+ outl(INF_3C90X.IOAddr + regUpListPtr_l, v2p(&rxdescs[oldprod]));
+ outputf("3c90x: WARNING: Ran out of rx slots");
}
+
+}
- /** Ok, got packet. Set length in nic->packetlen. **/
- nic->packetlen = (INF_3C90X.ReceiveUPD.UpPktStatus & 0x1FFF);
-
- return 1;
- }
-
+/* _recv polls the ring buffer to see if any packets are available. If any
+ * are, then eth_recv is called for each available. _recv returns how many
+ * 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)
+{
+ int errcode, n = 0;
+ struct pbuf *p;
+
+ /* Nothing to do? */
+ while ((rxdescs[rxcons].status & ((1<<14) | (1<<15))) != 0)
+ {
+ /** Check for Error (else we have good packet) **/
+ if (rxdescs[rxcons].status & (1<<14))
+ {
+ errcode = rxdescs[rxcons].status;
+ if (errcode & (1<<16))
+ outputf("3C90X: Rx Overrun (%hX)",errcode>>16);
+ else if (errcode & (1<<17))
+ outputf("3C90X: Runt Frame (%hX)",errcode>>16);
+ else if (errcode & (1<<18))
+ outputf("3C90X: Alignment Error (%hX)",errcode>>16);
+ else if (errcode & (1<<19))
+ outputf("3C90X: CRC Error (%hX)",errcode>>16);
+ else if (errcode & (1<<20))
+ outputf("3C90X: Oversized Frame (%hX)",errcode>>16);
+ else
+ outputf("3C90X: Packet error (%hX)",errcode>>16);
+
+ p = NULL;
+ pbuf_free(rxpbufs[rxcons]); /* Bounce the old one before setting it up again. */
+ } else {
+ p = rxpbufs[rxcons];
+ pbuf_realloc(p, rxdescs[rxcons].status & 0x1FFF); /* Resize the packet to how large it actually is. */
+ }
+
+ rxpbufs[rxcons] = NULL;
+ rxdescs[rxcons].status = 0;
+ rxcons = (rxcons + 1) % RECV_BUFS;
+
+ if (p)
+ {
+ eth_recv(nic, p);
+ n++;
+ }
+ }
+ _recv_prepare(nic); /* Light the NIC up again. */
+ 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.
/* 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);
+ _outw(cmdRxDisable, INF_3C90X.IOAddr + regCommandIntStatus_w);
+ _outw(cmdTxDisable, INF_3C90X.IOAddr + regCommandIntStatus_w);
}
INF_3C90X.is3c556 = (pci->did == 0x6055);
int i, c;
- unsigned short eeprom[0x21];
+ unsigned short eeprom[0x100];
unsigned int cfg;
unsigned int mopt;
unsigned int mstat;
}
if (ioaddr == 0)
- return 0;
-/*
- adjust_pci_dev(pci);
-*/
- nic->ioaddr = ioaddr & ~3;
- nic->irqno = 0;
-
- INF_3C90X.IOAddr = ioaddr & ~3;
+ {
+ 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);
+
+ 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))
{
/** Load the EEPROM contents **/
if (INF_3C90X.isBrev)
{
- for(i=0;i<=0x20;i++)
+ for(i=0;i<=/*0x20*/0x7F;i++)
{
eeprom[i] = a3c90x_internal_ReadEeprom(INF_3C90X.IOAddr, i);
}
}
else
{
- for(i=0;i<=0x17;i++)
+ for(i=0;i<=/*0x17*/0x7F;i++)
{
eeprom[i] = a3c90x_internal_ReadEeprom(INF_3C90X.IOAddr, i);
}
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 = %!", INF_3C90X.HWAddr);
+ 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;
- a3c90x_internal_SetWindow(INF_3C90X.IOAddr, winAddressing2);
+ _set_window(INF_3C90X.IOAddr, winAddressing2);
tmp = inw(INF_3C90X.IOAddr + regResetOptions_2_w);
tmp |= 0x4000;
- outw(tmp, INF_3C90X.IOAddr + regResetOptions_2_w);
+ _outw(tmp, INF_3C90X.IOAddr + regResetOptions_2_w);
}
/* Test if the link is good, if not continue */
- a3c90x_internal_SetWindow(INF_3C90X.IOAddr, winDiagnostics4);
+ _set_window(INF_3C90X.IOAddr, winDiagnostics4);
mstat = inw(INF_3C90X.IOAddr + regMediaStatus_4_w);
if((mstat & (1<<11)) == 0) {
outputf("Valid link not established");
}
/** Program the MAC address into the station address registers **/
- a3c90x_internal_SetWindow(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);
-
- /** Fill in our entry in the etherboot arp table **/
-/* XXX ? for lwip?
- for(i=0;i<ETH_ALEN;i++)
- nic->node_addr[i] = (eeprom[HWADDR_OFFSET + i/2] >> (8*((i&1)^1))) & 0xff;
-*/
+ _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
**/
- a3c90x_internal_SetWindow(INF_3C90X.IOAddr, winTxRxOptions3);
+ _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 **/
linktype = 0x0008;
if (mopt & 0x01)
{
- outputf("%s100Base-T4",(c++)?", ":"");
+ outputf(" 100Base-T4");
linktype = 0x0006;
}
if (mopt & 0x04)
{
- outputf("%s100Base-FX",(c++)?", ":"");
+ outputf(" 100Base-FX");
linktype = 0x0005;
}
if (mopt & 0x10)
{
- outputf("%s10Base-2",(c++)?", ":"");
+ outputf(" 10Base-2");
linktype = 0x0003;
}
if (mopt & 0x20)
{
- outputf("%sAUI",(c++)?", ":"");
+ outputf(" AUI");
linktype = 0x0001;
}
if (mopt & 0x40)
{
- outputf("%sMII",(c++)?", ":"");
+ outputf(" MII");
linktype = 0x0006;
}
if ((mopt & 0xA) == 0xA)
{
- outputf("%s10Base-T / 100Base-TX",(c++)?", ":"");
+ outputf(" 10Base-T / 100Base-TX");
linktype = 0x0008;
}
else if ((mopt & 0xA) == 0x2)
{
- outputf("%s100Base-TX",(c++)?", ":"");
+ outputf(" 100Base-TX");
linktype = 0x0008;
}
else if ((mopt & 0xA) == 0x8)
{
- outputf("%s10Base-T",(c++)?", ":"");
+ outputf(" 10Base-T");
linktype = 0x0008;
}
- outputf(".");
/** Determine transceiver type to use, depending on value stored in
** eeprom 0x16
/** enable DC converter for 10-Base-T **/
if (linktype == 0x0003)
{
- a3c90x_internal_IssueCommand(INF_3C90X.IOAddr, cmdEnableDcConverter, 0);
+ _issue_command(INF_3C90X.IOAddr, cmdEnableDcConverter, 0);
}
/** Set the link to the type we just determined. **/
- a3c90x_internal_SetWindow(INF_3C90X.IOAddr, winTxRxOptions3);
+ _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);
+ _outl(cfg, INF_3C90X.IOAddr + regInternalConfig_3_l);
/** Now that we set the xcvr type, reset the Tx and Rx, re-enable. **/
- a3c90x_internal_IssueCommand(INF_3C90X.IOAddr, cmdTxReset, 0x00);
- while (inw(INF_3C90X.IOAddr + regCommandIntStatus_w) & INT_CMDINPROGRESS)
- ;
-
+ _issue_command(INF_3C90X.IOAddr, cmdTxReset, 0);
if (!INF_3C90X.isBrev)
- outb(0x01, INF_3C90X.IOAddr + regTxFreeThresh_b);
+ _outb(0x01, INF_3C90X.IOAddr + regTxFreeThresh_b);
- a3c90x_internal_IssueCommand(INF_3C90X.IOAddr, cmdTxEnable, 0);
+ _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)
- a3c90x_internal_IssueCommand(INF_3C90X.IOAddr, cmdRxReset, 0x04);
+ _issue_command(INF_3C90X.IOAddr, cmdRxReset, 0x04);
else
- a3c90x_internal_IssueCommand(INF_3C90X.IOAddr, cmdRxReset, 0x00);
- while (inw(INF_3C90X.IOAddr + regCommandIntStatus_w) & INT_CMDINPROGRESS)
- ;
+ _issue_command(INF_3C90X.IOAddr, cmdRxReset, 0x00);
/** Set the RX filter = receive only individual pkts & multicast & bcast. **/
- a3c90x_internal_IssueCommand(INF_3C90X.IOAddr, cmdSetRxFilter, 0x01 + 0x02 + 0x04);
- a3c90x_internal_IssueCommand(INF_3C90X.IOAddr, cmdRxEnable, 0);
-
+ _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
**/
- a3c90x_internal_IssueCommand(INF_3C90X.IOAddr, cmdSetInterruptEnable, 0);
- a3c90x_internal_IssueCommand(INF_3C90X.IOAddr,
- cmdSetIndicationEnable, 0x0014);
- a3c90x_internal_IssueCommand(INF_3C90X.IOAddr,
- cmdAcknowledgeInterrupt, 0x661);
+ _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->poll = a3c90x_poll;
- nic->transmit = a3c90x_transmit;
+ nic.recv = _recv;
+ nic.transmit = _transmit;
+ memcpy(nic.hwaddr, INF_3C90X.HWAddr, 6);
+ eth_register(&nic);
return 1;
}
git.joshuawise.com / netwatch.git / blobdiff