383 lines
12 KiB
C
383 lines
12 KiB
C
|
/*
|
||
|
|
drivers/net/ethernet/dec/tulip/eeprom.c
|
||
|
|
|
||
|
|
Copyright 2000,2001 The Linux Kernel Team
|
||
|
|
Written/copyright 1994-2001 by Donald Becker.
|
||
|
|
|
||
|
|
This software may be used and distributed according to the terms
|
||
|
|
of the GNU General Public License, incorporated herein by reference.
|
||
|
|
|
||
|
|
Please submit bug reports to http://bugzilla.kernel.org/.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <linux/pci.h>
|
||
|
|
#include <linux/slab.h>
|
||
|
|
#include "tulip.h"
|
||
|
|
#include <asm/unaligned.h>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
/* Serial EEPROM section. */
|
||
|
|
/* The main routine to parse the very complicated SROM structure.
|
||
|
|
Search www.digital.com for "21X4 SROM" to get details.
|
||
|
|
This code is very complex, and will require changes to support
|
||
|
|
additional cards, so I'll be verbose about what is going on.
|
||
|
|
*/
|
||
|
|
|
||
|
|
/* Known cards that have old-style EEPROMs. */
|
||
|
|
static struct eeprom_fixup eeprom_fixups[] = {
|
||
|
|
{"Asante", 0, 0, 0x94, {0x1e00, 0x0000, 0x0800, 0x0100, 0x018c,
|
||
|
|
0x0000, 0x0000, 0xe078, 0x0001, 0x0050, 0x0018 }},
|
||
|
|
{"SMC9332DST", 0, 0, 0xC0, { 0x1e00, 0x0000, 0x0800, 0x041f,
|
||
|
|
0x0000, 0x009E, /* 10baseT */
|
||
|
|
0x0004, 0x009E, /* 10baseT-FD */
|
||
|
|
0x0903, 0x006D, /* 100baseTx */
|
||
|
|
0x0905, 0x006D, /* 100baseTx-FD */ }},
|
||
|
|
{"Cogent EM100", 0, 0, 0x92, { 0x1e00, 0x0000, 0x0800, 0x063f,
|
||
|
|
0x0107, 0x8021, /* 100baseFx */
|
||
|
|
0x0108, 0x8021, /* 100baseFx-FD */
|
||
|
|
0x0100, 0x009E, /* 10baseT */
|
||
|
|
0x0104, 0x009E, /* 10baseT-FD */
|
||
|
|
0x0103, 0x006D, /* 100baseTx */
|
||
|
|
0x0105, 0x006D, /* 100baseTx-FD */ }},
|
||
|
|
{"Maxtech NX-110", 0, 0, 0xE8, { 0x1e00, 0x0000, 0x0800, 0x0513,
|
||
|
|
0x1001, 0x009E, /* 10base2, CSR12 0x10*/
|
||
|
|
0x0000, 0x009E, /* 10baseT */
|
||
|
|
0x0004, 0x009E, /* 10baseT-FD */
|
||
|
|
0x0303, 0x006D, /* 100baseTx, CSR12 0x03 */
|
||
|
|
0x0305, 0x006D, /* 100baseTx-FD CSR12 0x03 */}},
|
||
|
|
{"Accton EN1207", 0, 0, 0xE8, { 0x1e00, 0x0000, 0x0800, 0x051F,
|
||
|
|
0x1B01, 0x0000, /* 10base2, CSR12 0x1B */
|
||
|
|
0x0B00, 0x009E, /* 10baseT, CSR12 0x0B */
|
||
|
|
0x0B04, 0x009E, /* 10baseT-FD,CSR12 0x0B */
|
||
|
|
0x1B03, 0x006D, /* 100baseTx, CSR12 0x1B */
|
||
|
|
0x1B05, 0x006D, /* 100baseTx-FD CSR12 0x1B */
|
||
|
|
}},
|
||
|
|
{"NetWinder", 0x00, 0x10, 0x57,
|
||
|
|
/* Default media = MII
|
||
|
|
* MII block, reset sequence (3) = 0x0821 0x0000 0x0001, capabilities 0x01e1
|
||
|
|
*/
|
||
|
|
{ 0x1e00, 0x0000, 0x000b, 0x8f01, 0x0103, 0x0300, 0x0821, 0x000, 0x0001, 0x0000, 0x01e1 }
|
||
|
|
},
|
||
|
|
{"Cobalt Microserver", 0, 0x10, 0xE0, {0x1e00, /* 0 == controller #, 1e == offset */
|
||
|
|
0x0000, /* 0 == high offset, 0 == gap */
|
||
|
|
0x0800, /* Default Autoselect */
|
||
|
|
0x8001, /* 1 leaf, extended type, bogus len */
|
||
|
|
0x0003, /* Type 3 (MII), PHY #0 */
|
||
|
|
0x0400, /* 0 init instr, 4 reset instr */
|
||
|
|
0x0801, /* Set control mode, GP0 output */
|
||
|
|
0x0000, /* Drive GP0 Low (RST is active low) */
|
||
|
|
0x0800, /* control mode, GP0 input (undriven) */
|
||
|
|
0x0000, /* clear control mode */
|
||
|
|
0x7800, /* 100TX FDX + HDX, 10bT FDX + HDX */
|
||
|
|
0x01e0, /* Advertise all above */
|
||
|
|
0x5000, /* FDX all above */
|
||
|
|
0x1800, /* Set fast TTM in 100bt modes */
|
||
|
|
0x0000, /* PHY cannot be unplugged */
|
||
|
|
}},
|
||
|
|
{NULL}};
|
||
|
|
|
||
|
|
|
||
|
|
static const char *const block_name[] = {
|
||
|
|
"21140 non-MII",
|
||
|
|
"21140 MII PHY",
|
||
|
|
"21142 Serial PHY",
|
||
|
|
"21142 MII PHY",
|
||
|
|
"21143 SYM PHY",
|
||
|
|
"21143 reset method"
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
/**
|
||
|
|
* tulip_build_fake_mediatable - Build a fake mediatable entry.
|
||
|
|
* @tp: Ptr to the tulip private data.
|
||
|
|
*
|
||
|
|
* Some cards like the 3x5 HSC cards (J3514A) do not have a standard
|
||
|
|
* srom and can not be handled under the fixup routine. These cards
|
||
|
|
* still need a valid mediatable entry for correct csr12 setup and
|
||
|
|
* mii handling.
|
||
|
|
*
|
||
|
|
* Since this is currently a parisc-linux specific function, the
|
||
|
|
* #ifdef __hppa__ should completely optimize this function away for
|
||
|
|
* non-parisc hardware.
|
||
|
|
*/
|
||
|
|
static void tulip_build_fake_mediatable(struct tulip_private *tp)
|
||
|
|
{
|
||
|
|
#ifdef CONFIG_GSC
|
||
|
|
if (tp->flags & NEEDS_FAKE_MEDIA_TABLE) {
|
||
|
|
static unsigned char leafdata[] =
|
||
|
|
{ 0x01, /* phy number */
|
||
|
|
0x02, /* gpr setup sequence length */
|
||
|
|
0x02, 0x00, /* gpr setup sequence */
|
||
|
|
0x02, /* phy reset sequence length */
|
||
|
|
0x01, 0x00, /* phy reset sequence */
|
||
|
|
0x00, 0x78, /* media capabilities */
|
||
|
|
0x00, 0xe0, /* nway advertisement */
|
||
|
|
0x00, 0x05, /* fdx bit map */
|
||
|
|
0x00, 0x06 /* ttm bit map */
|
||
|
|
};
|
||
|
|
|
||
|
|
tp->mtable = kmalloc(sizeof(struct mediatable) +
|
||
|
|
sizeof(struct medialeaf), GFP_KERNEL);
|
||
|
|
|
||
|
|
if (tp->mtable == NULL)
|
||
|
|
return; /* Horrible, impossible failure. */
|
||
|
|
|
||
|
|
tp->mtable->defaultmedia = 0x800;
|
||
|
|
tp->mtable->leafcount = 1;
|
||
|
|
tp->mtable->csr12dir = 0x3f; /* inputs on bit7 for hsc-pci, bit6 for pci-fx */
|
||
|
|
tp->mtable->has_nonmii = 0;
|
||
|
|
tp->mtable->has_reset = 0;
|
||
|
|
tp->mtable->has_mii = 1;
|
||
|
|
tp->mtable->csr15dir = tp->mtable->csr15val = 0;
|
||
|
|
tp->mtable->mleaf[0].type = 1;
|
||
|
|
tp->mtable->mleaf[0].media = 11;
|
||
|
|
tp->mtable->mleaf[0].leafdata = &leafdata[0];
|
||
|
|
tp->flags |= HAS_PHY_IRQ;
|
||
|
|
tp->csr12_shadow = -1;
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
}
|
||
|
|
|
||
|
|
void tulip_parse_eeprom(struct net_device *dev)
|
||
|
|
{
|
||
|
|
/*
|
||
|
|
dev is not registered at this point, so logging messages can't
|
||
|
|
use dev_<level> or netdev_<level> but dev->name is good via a
|
||
|
|
hack in the caller
|
||
|
|
*/
|
||
|
|
|
||
|
|
/* The last media info list parsed, for multiport boards. */
|
||
|
|
static struct mediatable *last_mediatable;
|
||
|
|
static unsigned char *last_ee_data;
|
||
|
|
static int controller_index;
|
||
|
|
struct tulip_private *tp = netdev_priv(dev);
|
||
|
|
unsigned char *ee_data = tp->eeprom;
|
||
|
|
int i;
|
||
|
|
|
||
|
|
tp->mtable = NULL;
|
||
|
|
/* Detect an old-style (SA only) EEPROM layout:
|
||
|
|
memcmp(eedata, eedata+16, 8). */
|
||
|
|
for (i = 0; i < 8; i ++)
|
||
|
|
if (ee_data[i] != ee_data[16+i])
|
||
|
|
break;
|
||
|
|
if (i >= 8) {
|
||
|
|
if (ee_data[0] == 0xff) {
|
||
|
|
if (last_mediatable) {
|
||
|
|
controller_index++;
|
||
|
|
pr_info("%s: Controller %d of multiport board\n",
|
||
|
|
dev->name, controller_index);
|
||
|
|
tp->mtable = last_mediatable;
|
||
|
|
ee_data = last_ee_data;
|
||
|
|
goto subsequent_board;
|
||
|
|
} else
|
||
|
|
pr_info("%s: Missing EEPROM, this interface may not work correctly!\n",
|
||
|
|
dev->name);
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
/* Do a fix-up based on the vendor half of the station address prefix. */
|
||
|
|
for (i = 0; eeprom_fixups[i].name; i++) {
|
||
|
|
if (dev->dev_addr[0] == eeprom_fixups[i].addr0 &&
|
||
|
|
dev->dev_addr[1] == eeprom_fixups[i].addr1 &&
|
||
|
|
dev->dev_addr[2] == eeprom_fixups[i].addr2) {
|
||
|
|
if (dev->dev_addr[2] == 0xE8 && ee_data[0x1a] == 0x55)
|
||
|
|
i++; /* An Accton EN1207, not an outlaw Maxtech. */
|
||
|
|
memcpy(ee_data + 26, eeprom_fixups[i].newtable,
|
||
|
|
sizeof(eeprom_fixups[i].newtable));
|
||
|
|
pr_info("%s: Old format EEPROM on '%s' board. Using substitute media control info\n",
|
||
|
|
dev->name, eeprom_fixups[i].name);
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
if (eeprom_fixups[i].name == NULL) { /* No fixup found. */
|
||
|
|
pr_info("%s: Old style EEPROM with no media selection information\n",
|
||
|
|
dev->name);
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
controller_index = 0;
|
||
|
|
if (ee_data[19] > 1) { /* Multiport board. */
|
||
|
|
last_ee_data = ee_data;
|
||
|
|
}
|
||
|
|
subsequent_board:
|
||
|
|
|
||
|
|
if (ee_data[27] == 0) { /* No valid media table. */
|
||
|
|
tulip_build_fake_mediatable(tp);
|
||
|
|
} else {
|
||
|
|
unsigned char *p = (void *)ee_data + ee_data[27];
|
||
|
|
unsigned char csr12dir = 0;
|
||
|
|
int count, new_advertise = 0;
|
||
|
|
struct mediatable *mtable;
|
||
|
|
u16 media = get_u16(p);
|
||
|
|
|
||
|
|
p += 2;
|
||
|
|
if (tp->flags & CSR12_IN_SROM)
|
||
|
|
csr12dir = *p++;
|
||
|
|
count = *p++;
|
||
|
|
|
||
|
|
/* there is no phy information, don't even try to build mtable */
|
||
|
|
if (count == 0) {
|
||
|
|
if (tulip_debug > 0)
|
||
|
|
pr_warn("%s: no phy info, aborting mtable build\n",
|
||
|
|
dev->name);
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
mtable = kmalloc(sizeof(struct mediatable) +
|
||
|
|
count * sizeof(struct medialeaf),
|
||
|
|
GFP_KERNEL);
|
||
|
|
if (mtable == NULL)
|
||
|
|
return; /* Horrible, impossible failure. */
|
||
|
|
last_mediatable = tp->mtable = mtable;
|
||
|
|
mtable->defaultmedia = media;
|
||
|
|
mtable->leafcount = count;
|
||
|
|
mtable->csr12dir = csr12dir;
|
||
|
|
mtable->has_nonmii = mtable->has_mii = mtable->has_reset = 0;
|
||
|
|
mtable->csr15dir = mtable->csr15val = 0;
|
||
|
|
|
||
|
|
pr_info("%s: EEPROM default media type %s\n",
|
||
|
|
dev->name,
|
||
|
|
media & 0x0800 ? "Autosense"
|
||
|
|
: medianame[media & MEDIA_MASK]);
|
||
|
|
for (i = 0; i < count; i++) {
|
||
|
|
struct medialeaf *leaf = &mtable->mleaf[i];
|
||
|
|
|
||
|
|
if ((p[0] & 0x80) == 0) { /* 21140 Compact block. */
|
||
|
|
leaf->type = 0;
|
||
|
|
leaf->media = p[0] & 0x3f;
|
||
|
|
leaf->leafdata = p;
|
||
|
|
if ((p[2] & 0x61) == 0x01) /* Bogus, but Znyx boards do it. */
|
||
|
|
mtable->has_mii = 1;
|
||
|
|
p += 4;
|
||
|
|
} else {
|
||
|
|
leaf->type = p[1];
|
||
|
|
if (p[1] == 0x05) {
|
||
|
|
mtable->has_reset = i;
|
||
|
|
leaf->media = p[2] & 0x0f;
|
||
|
|
} else if (tp->chip_id == DM910X && p[1] == 0x80) {
|
||
|
|
/* Hack to ignore Davicom delay period block */
|
||
|
|
mtable->leafcount--;
|
||
|
|
count--;
|
||
|
|
i--;
|
||
|
|
leaf->leafdata = p + 2;
|
||
|
|
p += (p[0] & 0x3f) + 1;
|
||
|
|
continue;
|
||
|
|
} else if (p[1] & 1) {
|
||
|
|
int gpr_len, reset_len;
|
||
|
|
|
||
|
|
mtable->has_mii = 1;
|
||
|
|
leaf->media = 11;
|
||
|
|
gpr_len=p[3]*2;
|
||
|
|
reset_len=p[4+gpr_len]*2;
|
||
|
|
new_advertise |= get_u16(&p[7+gpr_len+reset_len]);
|
||
|
|
} else {
|
||
|
|
mtable->has_nonmii = 1;
|
||
|
|
leaf->media = p[2] & MEDIA_MASK;
|
||
|
|
/* Davicom's media number for 100BaseTX is strange */
|
||
|
|
if (tp->chip_id == DM910X && leaf->media == 1)
|
||
|
|
leaf->media = 3;
|
||
|
|
switch (leaf->media) {
|
||
|
|
case 0: new_advertise |= 0x0020; break;
|
||
|
|
case 4: new_advertise |= 0x0040; break;
|
||
|
|
case 3: new_advertise |= 0x0080; break;
|
||
|
|
case 5: new_advertise |= 0x0100; break;
|
||
|
|
case 6: new_advertise |= 0x0200; break;
|
||
|
|
}
|
||
|
|
if (p[1] == 2 && leaf->media == 0) {
|
||
|
|
if (p[2] & 0x40) {
|
||
|
|
u32 base15 = get_unaligned((u16*)&p[7]);
|
||
|
|
mtable->csr15dir =
|
||
|
|
(get_unaligned((u16*)&p[9])<<16) + base15;
|
||
|
|
mtable->csr15val =
|
||
|
|
(get_unaligned((u16*)&p[11])<<16) + base15;
|
||
|
|
} else {
|
||
|
|
mtable->csr15dir = get_unaligned((u16*)&p[3])<<16;
|
||
|
|
mtable->csr15val = get_unaligned((u16*)&p[5])<<16;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
leaf->leafdata = p + 2;
|
||
|
|
p += (p[0] & 0x3f) + 1;
|
||
|
|
}
|
||
|
|
if (tulip_debug > 1 && leaf->media == 11) {
|
||
|
|
unsigned char *bp = leaf->leafdata;
|
||
|
|
pr_info("%s: MII interface PHY %d, setup/reset sequences %d/%d long, capabilities %02x %02x\n",
|
||
|
|
dev->name,
|
||
|
|
bp[0], bp[1], bp[2 + bp[1]*2],
|
||
|
|
bp[5 + bp[2 + bp[1]*2]*2],
|
||
|
|
bp[4 + bp[2 + bp[1]*2]*2]);
|
||
|
|
}
|
||
|
|
pr_info("%s: Index #%d - Media %s (#%d) described by a %s (%d) block\n",
|
||
|
|
dev->name,
|
||
|
|
i, medianame[leaf->media & 15], leaf->media,
|
||
|
|
leaf->type < ARRAY_SIZE(block_name) ? block_name[leaf->type] : "<unknown>",
|
||
|
|
leaf->type);
|
||
|
|
}
|
||
|
|
if (new_advertise)
|
||
|
|
tp->sym_advertise = new_advertise;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
/* Reading a serial EEPROM is a "bit" grungy, but we work our way through:->.*/
|
||
|
|
|
||
|
|
/* EEPROM_Ctrl bits. */
|
||
|
|
#define EE_SHIFT_CLK 0x02 /* EEPROM shift clock. */
|
||
|
|
#define EE_CS 0x01 /* EEPROM chip select. */
|
||
|
|
#define EE_DATA_WRITE 0x04 /* Data from the Tulip to EEPROM. */
|
||
|
|
#define EE_WRITE_0 0x01
|
||
|
|
#define EE_WRITE_1 0x05
|
||
|
|
#define EE_DATA_READ 0x08 /* Data from the EEPROM chip. */
|
||
|
|
#define EE_ENB (0x4800 | EE_CS)
|
||
|
|
|
||
|
|
/* Delay between EEPROM clock transitions.
|
||
|
|
Even at 33Mhz current PCI implementations don't overrun the EEPROM clock.
|
||
|
|
We add a bus turn-around to insure that this remains true. */
|
||
|
|
#define eeprom_delay() ioread32(ee_addr)
|
||
|
|
|
||
|
|
/* The EEPROM commands include the alway-set leading bit. */
|
||
|
|
#define EE_READ_CMD (6)
|
||
|
|
|
||
|
|
/* Note: this routine returns extra data bits for size detection. */
|
||
|
|
int tulip_read_eeprom(struct net_device *dev, int location, int addr_len)
|
||
|
|
{
|
||
|
|
int i;
|
||
|
|
unsigned retval = 0;
|
||
|
|
struct tulip_private *tp = netdev_priv(dev);
|
||
|
|
void __iomem *ee_addr = tp->base_addr + CSR9;
|
||
|
|
int read_cmd = location | (EE_READ_CMD << addr_len);
|
||
|
|
|
||
|
|
/* If location is past the end of what we can address, don't
|
||
|
|
* read some other location (ie truncate). Just return zero.
|
||
|
|
*/
|
||
|
|
if (location > (1 << addr_len) - 1)
|
||
|
|
return 0;
|
||
|
|
|
||
|
|
iowrite32(EE_ENB & ~EE_CS, ee_addr);
|
||
|
|
iowrite32(EE_ENB, ee_addr);
|
||
|
|
|
||
|
|
/* Shift the read command bits out. */
|
||
|
|
for (i = 4 + addr_len; i >= 0; i--) {
|
||
|
|
short dataval = (read_cmd & (1 << i)) ? EE_DATA_WRITE : 0;
|
||
|
|
iowrite32(EE_ENB | dataval, ee_addr);
|
||
|
|
eeprom_delay();
|
||
|
|
iowrite32(EE_ENB | dataval | EE_SHIFT_CLK, ee_addr);
|
||
|
|
eeprom_delay();
|
||
|
|
retval = (retval << 1) | ((ioread32(ee_addr) & EE_DATA_READ) ? 1 : 0);
|
||
|
|
}
|
||
|
|
iowrite32(EE_ENB, ee_addr);
|
||
|
|
eeprom_delay();
|
||
|
|
|
||
|
|
for (i = 16; i > 0; i--) {
|
||
|
|
iowrite32(EE_ENB | EE_SHIFT_CLK, ee_addr);
|
||
|
|
eeprom_delay();
|
||
|
|
retval = (retval << 1) | ((ioread32(ee_addr) & EE_DATA_READ) ? 1 : 0);
|
||
|
|
iowrite32(EE_ENB, ee_addr);
|
||
|
|
eeprom_delay();
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Terminate the EEPROM access. */
|
||
|
|
iowrite32(EE_ENB & ~EE_CS, ee_addr);
|
||
|
|
return (tp->flags & HAS_SWAPPED_SEEPROM) ? swab16(retval) : retval;
|
||
|
|
}
|
||
|
|
|