/*
* Probe and vendor-specific initialization routine for NE1000/2000 boards
*/
int
ed_probe_Novell_generic(device_t dev, int flags)
{
struct ed_softc *sc = device_get_softc(dev);
u_int memsize;
int error;
u_char tmp;
static char test_pattern[32] = "THIS is A memory TEST pattern";
char test_buffer[32];
/* Reset the board */
if (ED_FLAGS_GETTYPE(flags) == ED_FLAGS_GWETHER) {
ed_asic_outb(sc, ED_NOVELL_RESET, 0);
DELAY(200);
}
tmp = ed_asic_inb(sc, ED_NOVELL_RESET);
/*
* I don't know if this is necessary; probably cruft leftover from
* Clarkson packet driver code. Doesn't do a thing on the boards I've
* tested. -DG
*/
ed_asic_outb(sc, ED_NOVELL_RESET, tmp);
DELAY(5000);
/*
* This is needed because some NE clones apparently don't reset the
* NIC properly (or the NIC chip doesn't reset fully on power-up) XXX
* - this makes the probe invasive! ...Done against my better
* judgement. -DLG
*/
ed_nic_outb(sc, ED_P0_CR, ED_CR_RD2 | ED_CR_STP);
DELAY(5000);
/* Make sure that we really have an 8390 based board */
if (!ed_probe_generic8390(sc))
return (ENXIO);
sc->vendor = ED_VENDOR_NOVELL;
sc->mem_shared = 0;
sc->cr_proto = ED_CR_RD2;
/*
* Test the ability to read and write to the NIC memory. This has the
* side affect of determining if this is an NE1000 or an NE2000.
*/
/*
* This prevents packets from being stored in the NIC memory when the
* readmem routine turns on the start bit in the CR.
*/
ed_nic_outb(sc, ED_P0_RCR, ED_RCR_MON);
/* Temporarily initialize DCR for byte operations */
ed_nic_outb(sc, ED_P0_DCR, ED_DCR_FT1 | ED_DCR_LS);
ed_nic_outb(sc, ED_P0_PSTART, 8192 / ED_PAGE_SIZE);
ed_nic_outb(sc, ED_P0_PSTOP, 16384 / ED_PAGE_SIZE);
/*
* Some devices identify themselves. Some of those devices
* can't handle being probed, so we allow forcing a mode. If
* these flags are set, force it, otherwise probe.
*/
if (flags & ED_FLAGS_FORCE_8BIT_MODE) {
sc->isa16bit = 0;
sc->type = ED_TYPE_NE1000;
sc->type_str = "NE1000";
} else if (flags & ED_FLAGS_FORCE_16BIT_MODE) {
sc->isa16bit = 1;
sc->type = ED_TYPE_NE2000;
sc->type_str = "NE2000";
ed_nic_outb(sc, ED_P0_DCR, ED_DCR_WTS | ED_DCR_FT1 | ED_DCR_LS);
ed_nic_outb(sc, ED_P0_PSTART, 16384 / ED_PAGE_SIZE);
ed_nic_outb(sc, ED_P0_PSTOP, 32768 / ED_PAGE_SIZE);
} else {
/*
* Write a test pattern in byte mode. If this fails, then there
* probably isn't any memory at 8k - which likely means that the board
* is an NE2000.
*/
ed_pio_writemem(sc, test_pattern, 8192, sizeof(test_pattern));
ed_pio_readmem(sc, 8192, test_buffer, sizeof(test_pattern));
if (bcmp(test_pattern, test_buffer, sizeof(test_pattern)) == 0) {
sc->type = ED_TYPE_NE1000;
sc->type_str = "NE1000";
sc->isa16bit = 0;
} else {
/* Not an NE1000 - try NE2000 */
sc->isa16bit = 1;
ed_nic_outb(sc, ED_P0_DCR, ED_DCR_WTS | ED_DCR_FT1 | ED_DCR_LS);
ed_nic_outb(sc, ED_P0_PSTART, 16384 / ED_PAGE_SIZE);
ed_nic_outb(sc, ED_P0_PSTOP, 32768 / ED_PAGE_SIZE);
/*
* Write a test pattern in word mode. If this also fails, then
* we don't know what this board is.
*/
ed_pio_writemem(sc, test_pattern, 16384, sizeof(test_pattern));
ed_pio_readmem(sc, 16384, test_buffer, sizeof(test_pattern));
if (bcmp(test_pattern, test_buffer, sizeof(test_pattern)) == 0) {
sc->type = ED_TYPE_NE2000;
sc->type_str = "NE2000";
} else {
return (ENXIO);
}
}
}
sc->chip_type = ED_CHIP_TYPE_DP8390;
/* 8k of memory plus an additional 8k if 16bit */
memsize = 8192 + sc->isa16bit * 8192;
sc->mem_size = memsize;
/* NIC memory doesn't start at zero on an NE board */
/* The start address is tied to the bus width */
sc->mem_start = 8192 + sc->isa16bit * 8192;
sc->mem_end = sc->mem_start + memsize;
sc->tx_page_start = memsize / ED_PAGE_SIZE;
if (ED_FLAGS_GETTYPE(flags) == ED_FLAGS_GWETHER) {
error = ed_probe_gwether(dev);
if (error)
return (error);
}
/*
* Use one xmit buffer if < 16k, two buffers otherwise (if not told
* otherwise).
*/
if ((memsize < 16384) || (flags & ED_FLAGS_NO_MULTI_BUFFERING))
sc->txb_cnt = 1;
else
sc->txb_cnt = 2;
sc->rec_page_start = sc->tx_page_start + sc->txb_cnt * ED_TXBUF_SIZE;
sc->rec_page_stop = sc->tx_page_start + memsize / ED_PAGE_SIZE;
sc->mem_ring = sc->mem_start + sc->txb_cnt * ED_PAGE_SIZE * ED_TXBUF_SIZE;
/* clear any pending interrupts that might have occurred above */
ed_nic_outb(sc, ED_P0_ISR, 0xff);
sc->sc_write_mbufs = ed_pio_write_mbufs;
return (0);
}
/*
* Probe and vendor-specific initialization routine for ax88x90 boards
*/
static int
ed_probe_ax88x90_generic(device_t dev, int flags)
{
struct ed_softc *sc = device_get_softc(dev);
u_int memsize;
static char test_pattern[32] = "THIS is A memory TEST pattern";
char test_buffer[32];
ed_pccard_ax88x90_reset(sc);
DELAY(10*1000);
/* Make sure that we really have an 8390 based board */
if (!ed_probe_generic8390(sc))
return (ENXIO);
sc->vendor = ED_VENDOR_NOVELL;
sc->mem_shared = 0;
sc->cr_proto = ED_CR_RD2;
/*
* This prevents packets from being stored in the NIC memory when the
* readmem routine turns on the start bit in the CR. We write some
* bytes in word mode and verify we can read them back. If we can't
* then we don't have an AX88x90 chip here.
*/
sc->isa16bit = 1;
ed_nic_outb(sc, ED_P0_RCR, ED_RCR_MON);
ed_nic_outb(sc, ED_P0_DCR, ED_DCR_WTS | ED_DCR_FT1 | ED_DCR_LS);
ed_pio_writemem(sc, test_pattern, 16384, sizeof(test_pattern));
ed_pio_readmem(sc, 16384, test_buffer, sizeof(test_pattern));
if (bcmp(test_pattern, test_buffer, sizeof(test_pattern)) != 0)
return (ENXIO);
/*
* Hard code values based on the datasheet. We're NE-2000 compatible
* NIC with 16kb of packet memory starting at 16k offset.
*/
sc->type = ED_TYPE_NE2000;
memsize = sc->mem_size = 16*1024;
sc->mem_start = 16 * 1024;
if (ed_asic_inb(sc, ED_AX88X90_TEST) != 0)
sc->chip_type = ED_CHIP_TYPE_AX88790;
else {
sc->chip_type = ED_CHIP_TYPE_AX88190;
/*
* The AX88190 (not A) has external 64k SRAM. Probe for this
* here. Most of the cards I have either use the AX88190A
* part, or have only 32k SRAM for some reason, so I don't
* know if this works or not.
*/
ed_pio_writemem(sc, test_pattern, 32768, sizeof(test_pattern));
ed_pio_readmem(sc, 32768, test_buffer, sizeof(test_pattern));
if (bcmp(test_pattern, test_buffer, sizeof(test_pattern)) == 0) {
sc->mem_start = 2*1024;
memsize = sc->mem_size = 62 * 1024;
}
}
sc->mem_end = sc->mem_start + memsize;
sc->tx_page_start = memsize / ED_PAGE_SIZE;
if (sc->mem_size > 16 * 1024)
sc->txb_cnt = 3;
else
sc->txb_cnt = 2;
sc->rec_page_start = sc->tx_page_start + sc->txb_cnt * ED_TXBUF_SIZE;
sc->rec_page_stop = sc->tx_page_start + memsize / ED_PAGE_SIZE;
sc->mem_ring = sc->mem_start + sc->txb_cnt * ED_PAGE_SIZE * ED_TXBUF_SIZE;
ed_nic_outb(sc, ED_P0_PSTART, sc->mem_start / ED_PAGE_SIZE);
ed_nic_outb(sc, ED_P0_PSTOP, sc->mem_end / ED_PAGE_SIZE);
/* Get the mac before we go -- It's just at 0x400 in "SRAM" */
ed_pio_readmem(sc, 0x400, sc->enaddr, ETHER_ADDR_LEN);
/* clear any pending interrupts that might have occurred above */
ed_nic_outb(sc, ED_P0_ISR, 0xff);
sc->sc_write_mbufs = ed_pio_write_mbufs;
return (0);
}
static int
ed_probe_gwether(device_t dev)
{
int x, i, msize = 0;
bus_size_t mstart = 0;
char pbuf0[ED_PAGE_SIZE], pbuf[ED_PAGE_SIZE], tbuf[ED_PAGE_SIZE];
struct ed_softc *sc = device_get_softc(dev);
for (i = 0; i < ED_PAGE_SIZE; i++)
pbuf0[i] = 0;
/* Clear all the memory. */
for (x = 1; x < 256; x++)
ed_pio_writemem(sc, pbuf0, x * 256, ED_PAGE_SIZE);
/* Search for the start of RAM. */
for (x = 1; x < 256; x++) {
ed_pio_readmem(sc, x * 256, tbuf, ED_PAGE_SIZE);
if (bcmp(pbuf0, tbuf, ED_PAGE_SIZE) == 0) {
for (i = 0; i < ED_PAGE_SIZE; i++)
pbuf[i] = 255 - x;
ed_pio_writemem(sc, pbuf, x * 256, ED_PAGE_SIZE);
ed_pio_readmem(sc, x * 256, tbuf, ED_PAGE_SIZE);
if (bcmp(pbuf, tbuf, ED_PAGE_SIZE) == 0) {
mstart = x * ED_PAGE_SIZE;
msize = ED_PAGE_SIZE;
break;
}
}
}
if (mstart == 0) {
device_printf(dev, "Cannot find start of RAM.\n");
return (ENXIO);
}
/* Probe the size of RAM. */
for (x = (mstart / ED_PAGE_SIZE) + 1; x < 256; x++) {
ed_pio_readmem(sc, x * 256, tbuf, ED_PAGE_SIZE);
if (bcmp(pbuf0, tbuf, ED_PAGE_SIZE) == 0) {
for (i = 0; i < ED_PAGE_SIZE; i++)
pbuf[i] = 255 - x;
ed_pio_writemem(sc, pbuf, x * 256, ED_PAGE_SIZE);
ed_pio_readmem(sc, x * 256, tbuf, ED_PAGE_SIZE);
if (bcmp(pbuf, tbuf, ED_PAGE_SIZE) == 0)
msize += ED_PAGE_SIZE;
else {
break;
}
} else {
break;
}
}
if (msize == 0) {
device_printf(dev,
"Cannot find any RAM, start : %d, x = %d.\n",
(int)mstart, x);
return (ENXIO);
}
if (bootverbose)
device_printf(dev,
"RAM start at %d, size : %d.\n", (int)mstart, msize);
sc->mem_size = msize;
sc->mem_start = mstart;
sc->mem_end = msize + mstart;
sc->tx_page_start = mstart / ED_PAGE_SIZE;
return 0;
}