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linux/drivers/net/sk98lin/skvpd.c
Stephen Hemminger 5ad887fa8e sk98lin: resurrect driver 
This reverts commit e1abecc489.

The driver works on some hardware that skge doesn't handle yet.

Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-09-15 19:35:14 -04:00

1092 lines
26 KiB
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/******************************************************************************
*
* Name: skvpd.c
* Project: GEnesis, PCI Gigabit Ethernet Adapter
* Version: $Revision: 1.37 $
* Date: $Date: 2003/01/13 10:42:45 $
* Purpose: Shared software to read and write VPD data
*
******************************************************************************/
/******************************************************************************
*
* (C)Copyright 1998-2003 SysKonnect GmbH.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* The information in this file is provided "AS IS" without warranty.
*
******************************************************************************/
/*
Please refer skvpd.txt for information how to include this module
*/
static const char SysKonnectFileId[] =
"@(#)$Id: skvpd.c,v 1.37 2003/01/13 10:42:45 rschmidt Exp $ (C) SK";
#include "h/skdrv1st.h"
#include "h/sktypes.h"
#include "h/skdebug.h"
#include "h/skdrv2nd.h"
/*
* Static functions
*/
#ifndef SK_KR_PROTO
static SK_VPD_PARA *vpd_find_para(
SK_AC *pAC,
const char *key,
SK_VPD_PARA *p);
#else /* SK_KR_PROTO */
static SK_VPD_PARA *vpd_find_para();
#endif /* SK_KR_PROTO */
/*
* waits for a completion of a VPD transfer
* The VPD transfer must complete within SK_TICKS_PER_SEC/16
*
* returns 0: success, transfer completes
* error exit(9) with a error message
*/
static int VpdWait(
SK_AC *pAC, /* Adapters context */
SK_IOC IoC, /* IO Context */
int event) /* event to wait for (VPD_READ / VPD_write) completion*/
{
SK_U64 start_time;
SK_U16 state;
SK_DBG_MSG(pAC,SK_DBGMOD_VPD, SK_DBGCAT_CTRL,
("VPD wait for %s\n", event?"Write":"Read"));
start_time = SkOsGetTime(pAC);
do {
if (SkOsGetTime(pAC) - start_time > SK_TICKS_PER_SEC) {
/* Bug fix AF: Thu Mar 28 2002
* Do not call: VPD_STOP(pAC, IoC);
* A pending VPD read cycle can not be aborted by writing
* VPD_WRITE to the PCI_VPD_ADR_REG (VPD address register).
* Although the write threshold in the OUR-register protects
* VPD read only space from being overwritten this does not
* protect a VPD read from being `converted` into a VPD write
* operation (on the fly). As a consequence the VPD_STOP would
* delete VPD read only data. In case of any problems with the
* I2C bus we exit the loop here. The I2C read operation can
* not be aborted except by a reset (->LR).
*/
SK_DBG_MSG(pAC, SK_DBGMOD_VPD, SK_DBGCAT_FATAL | SK_DBGCAT_ERR,
("ERROR:VPD wait timeout\n"));
return(1);
}
VPD_IN16(pAC, IoC, PCI_VPD_ADR_REG, &state);
SK_DBG_MSG(pAC, SK_DBGMOD_VPD, SK_DBGCAT_CTRL,
("state = %x, event %x\n",state,event));
} while((int)(state & PCI_VPD_FLAG) == event);
return(0);
}
#ifdef SKDIAG
/*
* Read the dword at address 'addr' from the VPD EEPROM.
*
* Needed Time: MIN 1,3 ms MAX 2,6 ms
*
* Note: The DWord is returned in the endianess of the machine the routine
* is running on.
*
* Returns the data read.
*/
SK_U32 VpdReadDWord(
SK_AC *pAC, /* Adapters context */
SK_IOC IoC, /* IO Context */
int addr) /* VPD address */
{
SK_U32 Rtv;
/* start VPD read */
SK_DBG_MSG(pAC, SK_DBGMOD_VPD, SK_DBGCAT_CTRL,
("VPD read dword at 0x%x\n",addr));
addr &= ~VPD_WRITE; /* ensure the R/W bit is set to read */
VPD_OUT16(pAC, IoC, PCI_VPD_ADR_REG, (SK_U16)addr);
/* ignore return code here */
(void)VpdWait(pAC, IoC, VPD_READ);
/* Don't swap here, it's a data stream of bytes */
Rtv = 0;
VPD_IN32(pAC, IoC, PCI_VPD_DAT_REG, &Rtv);
SK_DBG_MSG(pAC, SK_DBGMOD_VPD, SK_DBGCAT_CTRL,
("VPD read dword data = 0x%x\n",Rtv));
return(Rtv);
}
#endif /* SKDIAG */
/*
* Read one Stream of 'len' bytes of VPD data, starting at 'addr' from
* or to the I2C EEPROM.
*
* Returns number of bytes read / written.
*/
static int VpdWriteStream(
SK_AC *pAC, /* Adapters context */
SK_IOC IoC, /* IO Context */
char *buf, /* data buffer */
int Addr, /* VPD start address */
int Len) /* number of bytes to read / to write */
{
int i;
int j;
SK_U16 AdrReg;
int Rtv;
SK_U8 * pComp; /* Compare pointer */
SK_U8 Data; /* Input Data for Compare */
/* Init Compare Pointer */
pComp = (SK_U8 *) buf;
for (i = 0; i < Len; i++, buf++) {
if ((i%sizeof(SK_U32)) == 0) {
/*
* At the begin of each cycle read the Data Reg
* So it is initialized even if only a few bytes
* are written.
*/
AdrReg = (SK_U16) Addr;
AdrReg &= ~VPD_WRITE; /* READ operation */
VPD_OUT16(pAC, IoC, PCI_VPD_ADR_REG, AdrReg);
/* Wait for termination */
Rtv = VpdWait(pAC, IoC, VPD_READ);
if (Rtv != 0) {
return(i);
}
}
/* Write current Byte */
VPD_OUT8(pAC, IoC, PCI_VPD_DAT_REG + (i%sizeof(SK_U32)),
*(SK_U8*)buf);
if (((i%sizeof(SK_U32)) == 3) || (i == (Len - 1))) {
/* New Address needs to be written to VPD_ADDR reg */
AdrReg = (SK_U16) Addr;
Addr += sizeof(SK_U32);
AdrReg |= VPD_WRITE; /* WRITE operation */
VPD_OUT16(pAC, IoC, PCI_VPD_ADR_REG, AdrReg);
/* Wait for termination */
Rtv = VpdWait(pAC, IoC, VPD_WRITE);
if (Rtv != 0) {
SK_DBG_MSG(pAC, SK_DBGMOD_VPD, SK_DBGCAT_ERR,
("Write Timed Out\n"));
return(i - (i%sizeof(SK_U32)));
}
/*
* Now re-read to verify
*/
AdrReg &= ~VPD_WRITE; /* READ operation */
VPD_OUT16(pAC, IoC, PCI_VPD_ADR_REG, AdrReg);
/* Wait for termination */
Rtv = VpdWait(pAC, IoC, VPD_READ);
if (Rtv != 0) {
SK_DBG_MSG(pAC, SK_DBGMOD_VPD, SK_DBGCAT_ERR,
("Verify Timed Out\n"));
return(i - (i%sizeof(SK_U32)));
}
for (j = 0; j <= (int)(i%sizeof(SK_U32)); j++, pComp++) {
VPD_IN8(pAC, IoC, PCI_VPD_DAT_REG + j, &Data);
if (Data != *pComp) {
/* Verify Error */
SK_DBG_MSG(pAC, SK_DBGMOD_VPD, SK_DBGCAT_ERR,
("WriteStream Verify Error\n"));
return(i - (i%sizeof(SK_U32)) + j);
}
}
}
}
return(Len);
}
/*
* Read one Stream of 'len' bytes of VPD data, starting at 'addr' from
* or to the I2C EEPROM.
*
* Returns number of bytes read / written.
*/
static int VpdReadStream(
SK_AC *pAC, /* Adapters context */
SK_IOC IoC, /* IO Context */
char *buf, /* data buffer */
int Addr, /* VPD start address */
int Len) /* number of bytes to read / to write */
{
int i;
SK_U16 AdrReg;
int Rtv;
for (i = 0; i < Len; i++, buf++) {
if ((i%sizeof(SK_U32)) == 0) {
/* New Address needs to be written to VPD_ADDR reg */
AdrReg = (SK_U16) Addr;
Addr += sizeof(SK_U32);
AdrReg &= ~VPD_WRITE; /* READ operation */
VPD_OUT16(pAC, IoC, PCI_VPD_ADR_REG, AdrReg);
/* Wait for termination */
Rtv = VpdWait(pAC, IoC, VPD_READ);
if (Rtv != 0) {
return(i);
}
}
VPD_IN8(pAC, IoC, PCI_VPD_DAT_REG + (i%sizeof(SK_U32)),
(SK_U8 *)buf);
}
return(Len);
}
/*
* Read ore writes 'len' bytes of VPD data, starting at 'addr' from
* or to the I2C EEPROM.
*
* Returns number of bytes read / written.
*/
static int VpdTransferBlock(
SK_AC *pAC, /* Adapters context */
SK_IOC IoC, /* IO Context */
char *buf, /* data buffer */
int addr, /* VPD start address */
int len, /* number of bytes to read / to write */
int dir) /* transfer direction may be VPD_READ or VPD_WRITE */
{
int Rtv; /* Return value */
int vpd_rom_size;
SK_DBG_MSG(pAC, SK_DBGMOD_VPD, SK_DBGCAT_CTRL,
("VPD %s block, addr = 0x%x, len = %d\n",
dir ? "write" : "read", addr, len));
if (len == 0)
return(0);
vpd_rom_size = pAC->vpd.rom_size;
if (addr > vpd_rom_size - 4) {
SK_DBG_MSG(pAC, SK_DBGMOD_VPD, SK_DBGCAT_ERR | SK_DBGCAT_FATAL,
("Address error: 0x%x, exp. < 0x%x\n",
addr, vpd_rom_size - 4));
return(0);
}
if (addr + len > vpd_rom_size) {
len = vpd_rom_size - addr;
SK_DBG_MSG(pAC, SK_DBGMOD_VPD, SK_DBGCAT_ERR,
("Warning: len was cut to %d\n", len));
}
if (dir == VPD_READ) {
Rtv = VpdReadStream(pAC, IoC, buf, addr, len);
}
else {
Rtv = VpdWriteStream(pAC, IoC, buf, addr, len);
}
return(Rtv);
}
#ifdef SKDIAG
/*
* Read 'len' bytes of VPD data, starting at 'addr'.
*
* Returns number of bytes read.
*/
int VpdReadBlock(
SK_AC *pAC, /* pAC pointer */
SK_IOC IoC, /* IO Context */
char *buf, /* buffer were the data should be stored */
int addr, /* start reading at the VPD address */
int len) /* number of bytes to read */
{
return(VpdTransferBlock(pAC, IoC, buf, addr, len, VPD_READ));
}
/*
* Write 'len' bytes of *but to the VPD EEPROM, starting at 'addr'.
*
* Returns number of bytes writes.
*/
int VpdWriteBlock(
SK_AC *pAC, /* pAC pointer */
SK_IOC IoC, /* IO Context */
char *buf, /* buffer, holds the data to write */
int addr, /* start writing at the VPD address */
int len) /* number of bytes to write */
{
return(VpdTransferBlock(pAC, IoC, buf, addr, len, VPD_WRITE));
}
#endif /* SKDIAG */
/*
* (re)initialize the VPD buffer
*
* Reads the VPD data from the EEPROM into the VPD buffer.
* Get the remaining read only and read / write space.
*
* return 0: success
* 1: fatal VPD error
*/
static int VpdInit(
SK_AC *pAC, /* Adapters context */
SK_IOC IoC) /* IO Context */
{
SK_VPD_PARA *r, rp; /* RW or RV */
int i;
unsigned char x;
int vpd_size;
SK_U16 dev_id;
SK_U32 our_reg2;
SK_DBG_MSG(pAC, SK_DBGMOD_VPD, SK_DBGCAT_INIT, ("VpdInit .. "));
VPD_IN16(pAC, IoC, PCI_DEVICE_ID, &dev_id);
VPD_IN32(pAC, IoC, PCI_OUR_REG_2, &our_reg2);
pAC->vpd.rom_size = 256 << ((our_reg2 & PCI_VPD_ROM_SZ) >> 14);
/*
* this function might get used before the hardware is initialized
* therefore we cannot always trust in GIChipId
*/
if (((pAC->vpd.v.vpd_status & VPD_VALID) == 0 &&
dev_id != VPD_DEV_ID_GENESIS) ||
((pAC->vpd.v.vpd_status & VPD_VALID) != 0 &&
!pAC->GIni.GIGenesis)) {
/* for Yukon the VPD size is always 256 */
vpd_size = VPD_SIZE_YUKON;
}
else {
/* Genesis uses the maximum ROM size up to 512 for VPD */
if (pAC->vpd.rom_size > VPD_SIZE_GENESIS) {
vpd_size = VPD_SIZE_GENESIS;
}
else {
vpd_size = pAC->vpd.rom_size;
}
}
/* read the VPD data into the VPD buffer */
if (VpdTransferBlock(pAC, IoC, pAC->vpd.vpd_buf, 0, vpd_size, VPD_READ)
!= vpd_size) {
SK_DBG_MSG(pAC, SK_DBGMOD_VPD, SK_DBGCAT_ERR,
("Block Read Error\n"));
return(1);
}
pAC->vpd.vpd_size = vpd_size;
/* Asus K8V Se Deluxe bugfix. Correct VPD content */
/* MBo April 2004 */
if (((unsigned char)pAC->vpd.vpd_buf[0x3f] == 0x38) &&
((unsigned char)pAC->vpd.vpd_buf[0x40] == 0x3c) &&
((unsigned char)pAC->vpd.vpd_buf[0x41] == 0x45)) {
printk("sk98lin: Asus mainboard with buggy VPD? "
"Correcting data.\n");
pAC->vpd.vpd_buf[0x40] = 0x38;
}
/* find the end tag of the RO area */
if (!(r = vpd_find_para(pAC, VPD_RV, &rp))) {
SK_DBG_MSG(pAC, SK_DBGMOD_VPD, SK_DBGCAT_ERR | SK_DBGCAT_FATAL,
("Encoding Error: RV Tag not found\n"));
return(1);
}
if (r->p_val + r->p_len > pAC->vpd.vpd_buf + vpd_size/2) {
SK_DBG_MSG(pAC,SK_DBGMOD_VPD,SK_DBGCAT_ERR | SK_DBGCAT_FATAL,
("Encoding Error: Invalid VPD struct size\n"));
return(1);
}
pAC->vpd.v.vpd_free_ro = r->p_len - 1;
/* test the checksum */
for (i = 0, x = 0; (unsigned)i <= (unsigned)vpd_size/2 - r->p_len; i++) {
x += pAC->vpd.vpd_buf[i];
}
if (x != 0) {
/* checksum error */
SK_DBG_MSG(pAC, SK_DBGMOD_VPD, SK_DBGCAT_ERR | SK_DBGCAT_FATAL,
("VPD Checksum Error\n"));
return(1);
}
/* find and check the end tag of the RW area */
if (!(r = vpd_find_para(pAC, VPD_RW, &rp))) {
SK_DBG_MSG(pAC, SK_DBGMOD_VPD, SK_DBGCAT_ERR | SK_DBGCAT_FATAL,
("Encoding Error: RV Tag not found\n"));
return(1);
}
if (r->p_val < pAC->vpd.vpd_buf + vpd_size/2) {
SK_DBG_MSG(pAC, SK_DBGMOD_VPD, SK_DBGCAT_ERR | SK_DBGCAT_FATAL,
("Encoding Error: Invalid VPD struct size\n"));
return(1);
}
pAC->vpd.v.vpd_free_rw = r->p_len;
/* everything seems to be ok */
if (pAC->GIni.GIChipId != 0) {
pAC->vpd.v.vpd_status |= VPD_VALID;
}
SK_DBG_MSG(pAC, SK_DBGMOD_VPD, SK_DBGCAT_INIT,
("done. Free RO = %d, Free RW = %d\n",
pAC->vpd.v.vpd_free_ro, pAC->vpd.v.vpd_free_rw));
return(0);
}
/*
* find the Keyword 'key' in the VPD buffer and fills the
* parameter struct 'p' with it's values
*
* returns *p success
* 0: parameter was not found or VPD encoding error
*/
static SK_VPD_PARA *vpd_find_para(
SK_AC *pAC, /* common data base */
const char *key, /* keyword to find (e.g. "MN") */
SK_VPD_PARA *p) /* parameter description struct */
{
char *v ; /* points to VPD buffer */
int max; /* Maximum Number of Iterations */
v = pAC->vpd.vpd_buf;
max = 128;
SK_DBG_MSG(pAC, SK_DBGMOD_VPD, SK_DBGCAT_CTRL,
("VPD find para %s .. ",key));
/* check mandatory resource type ID string (Product Name) */
if (*v != (char)RES_ID) {
SK_DBG_MSG(pAC, SK_DBGMOD_VPD, SK_DBGCAT_ERR | SK_DBGCAT_FATAL,
("Error: 0x%x missing\n", RES_ID));
return NULL;
}
if (strcmp(key, VPD_NAME) == 0) {
p->p_len = VPD_GET_RES_LEN(v);
p->p_val = VPD_GET_VAL(v);
SK_DBG_MSG(pAC, SK_DBGMOD_VPD, SK_DBGCAT_CTRL,
("found, len = %d\n", p->p_len));
return(p);
}
v += 3 + VPD_GET_RES_LEN(v) + 3;
for (;; ) {
if (SK_MEMCMP(key,v,2) == 0) {
p->p_len = VPD_GET_VPD_LEN(v);
p->p_val = VPD_GET_VAL(v);
SK_DBG_MSG(pAC, SK_DBGMOD_VPD, SK_DBGCAT_CTRL,
("found, len = %d\n",p->p_len));
return(p);
}
/* exit when reaching the "RW" Tag or the maximum of itera. */
max--;
if (SK_MEMCMP(VPD_RW,v,2) == 0 || max == 0) {
break;
}
if (SK_MEMCMP(VPD_RV,v,2) == 0) {
v += 3 + VPD_GET_VPD_LEN(v) + 3; /* skip VPD-W */
}
else {
v += 3 + VPD_GET_VPD_LEN(v);
}
SK_DBG_MSG(pAC, SK_DBGMOD_VPD, SK_DBGCAT_CTRL,
("scanning '%c%c' len = %d\n",v[0],v[1],v[2]));
}
#ifdef DEBUG
SK_DBG_MSG(pAC, SK_DBGMOD_VPD, SK_DBGCAT_CTRL, ("not found\n"));
if (max == 0) {
SK_DBG_MSG(pAC, SK_DBGMOD_VPD, SK_DBGCAT_ERR | SK_DBGCAT_FATAL,
("Key/Len Encoding error\n"));
}
#endif /* DEBUG */
return NULL;
}
/*
* Move 'n' bytes. Begin with the last byte if 'n' is > 0,
* Start with the last byte if n is < 0.
*
* returns nothing
*/
static void vpd_move_para(
char *start, /* start of memory block */
char *end, /* end of memory block to move */
int n) /* number of bytes the memory block has to be moved */
{
char *p;
int i; /* number of byte copied */
if (n == 0)
return;
i = (int) (end - start + 1);
if (n < 0) {
p = start + n;
while (i != 0) {
*p++ = *start++;
i--;
}
}
else {
p = end + n;
while (i != 0) {
*p-- = *end--;
i--;
}
}
}
/*
* setup the VPD keyword 'key' at 'ip'.
*
* returns nothing
*/
static void vpd_insert_key(
const char *key, /* keyword to insert */
const char *buf, /* buffer with the keyword value */
int len, /* length of the value string */
char *ip) /* inseration point */
{
SK_VPD_KEY *p;
p = (SK_VPD_KEY *) ip;
p->p_key[0] = key[0];
p->p_key[1] = key[1];
p->p_len = (unsigned char) len;
SK_MEMCPY(&p->p_val,buf,len);
}
/*
* Setup the VPD end tag "RV" / "RW".
* Also correct the remaining space variables vpd_free_ro / vpd_free_rw.
*
* returns 0: success
* 1: encoding error
*/
static int vpd_mod_endtag(
SK_AC *pAC, /* common data base */
char *etp) /* end pointer input position */
{
SK_VPD_KEY *p;
unsigned char x;
int i;
int vpd_size;
SK_DBG_MSG(pAC, SK_DBGMOD_VPD, SK_DBGCAT_CTRL,
("VPD modify endtag at 0x%x = '%c%c'\n",etp,etp[0],etp[1]));
vpd_size = pAC->vpd.vpd_size;
p = (SK_VPD_KEY *) etp;
if (p->p_key[0] != 'R' || (p->p_key[1] != 'V' && p->p_key[1] != 'W')) {
/* something wrong here, encoding error */
SK_DBG_MSG(pAC,SK_DBGMOD_VPD,SK_DBGCAT_ERR | SK_DBGCAT_FATAL,
("Encoding Error: invalid end tag\n"));
return(1);
}
if (etp > pAC->vpd.vpd_buf + vpd_size/2) {
/* create "RW" tag */
p->p_len = (unsigned char)(pAC->vpd.vpd_buf+vpd_size-etp-3-1);
pAC->vpd.v.vpd_free_rw = (int) p->p_len;
i = pAC->vpd.v.vpd_free_rw;
etp += 3;
}
else {
/* create "RV" tag */
p->p_len = (unsigned char)(pAC->vpd.vpd_buf+vpd_size/2-etp-3);
pAC->vpd.v.vpd_free_ro = (int) p->p_len - 1;
/* setup checksum */
for (i = 0, x = 0; i < vpd_size/2 - p->p_len; i++) {
x += pAC->vpd.vpd_buf[i];
}
p->p_val = (char) 0 - x;
i = pAC->vpd.v.vpd_free_ro;
etp += 4;
}
while (i) {
*etp++ = 0x00;
i--;
}
return(0);
}
/*
* Insert a VPD keyword into the VPD buffer.
*
* The keyword 'key' is inserted at the position 'ip' in the
* VPD buffer.
* The keywords behind the input position will
* be moved. The VPD end tag "RV" or "RW" is generated again.
*
* returns 0: success
* 2: value string was cut
* 4: VPD full, keyword was not written
* 6: fatal VPD error
*
*/
static int VpdSetupPara(
SK_AC *pAC, /* common data base */
const char *key, /* keyword to insert */
const char *buf, /* buffer with the keyword value */
int len, /* length of the keyword value */
int type, /* VPD_RO_KEY or VPD_RW_KEY */
int op) /* operation to do: ADD_KEY or OWR_KEY */
{
SK_VPD_PARA vp;
char *etp; /* end tag position */
int free; /* remaining space in selected area */
char *ip; /* input position inside the VPD buffer */
int rtv; /* return code */
int head; /* additional haeder bytes to move */
int found; /* additinoal bytes if the keyword was found */
int vpd_size;
SK_DBG_MSG(pAC, SK_DBGMOD_VPD, SK_DBGCAT_CTRL,
("VPD setup para key = %s, val = %s\n",key,buf));
vpd_size = pAC->vpd.vpd_size;
rtv = 0;
ip = NULL;
if (type == VPD_RW_KEY) {
/* end tag is "RW" */
free = pAC->vpd.v.vpd_free_rw;
etp = pAC->vpd.vpd_buf + (vpd_size - free - 1 - 3);
}
else {
/* end tag is "RV" */
free = pAC->vpd.v.vpd_free_ro;
etp = pAC->vpd.vpd_buf + (vpd_size/2 - free - 4);
}
SK_DBG_MSG(pAC, SK_DBGMOD_VPD, SK_DBGCAT_CTRL,
("Free RO = %d, Free RW = %d\n",
pAC->vpd.v.vpd_free_ro, pAC->vpd.v.vpd_free_rw));
head = 0;
found = 0;
if (op == OWR_KEY) {
if (vpd_find_para(pAC, key, &vp)) {
found = 3;
ip = vp.p_val - 3;
free += vp.p_len + 3;
SK_DBG_MSG(pAC, SK_DBGMOD_VPD, SK_DBGCAT_CTRL,
("Overwrite Key\n"));
}
else {
op = ADD_KEY;
SK_DBG_MSG(pAC, SK_DBGMOD_VPD, SK_DBGCAT_CTRL,
("Add Key\n"));
}
}
if (op == ADD_KEY) {
ip = etp;
vp.p_len = 0;
head = 3;
}
if (len + 3 > free) {
if (free < 7) {
SK_DBG_MSG(pAC, SK_DBGMOD_VPD, SK_DBGCAT_ERR,
("VPD Buffer Overflow, keyword not written\n"));
return(4);
}
/* cut it again */
len = free - 3;
rtv = 2;
SK_DBG_MSG(pAC, SK_DBGMOD_VPD, SK_DBGCAT_ERR,
("VPD Buffer Full, Keyword was cut\n"));
}
vpd_move_para(ip + vp.p_len + found, etp+2, len-vp.p_len+head);
vpd_insert_key(key, buf, len, ip);
if (vpd_mod_endtag(pAC, etp + len - vp.p_len + head)) {
pAC->vpd.v.vpd_status &= ~VPD_VALID;
SK_DBG_MSG(pAC, SK_DBGMOD_VPD, SK_DBGCAT_ERR,
("VPD Encoding Error\n"));
return(6);
}
return(rtv);
}
/*
* Read the contents of the VPD EEPROM and copy it to the
* VPD buffer if not already done.
*
* return: A pointer to the vpd_status structure. The structure contains
* this fields.
*/
SK_VPD_STATUS *VpdStat(
SK_AC *pAC, /* Adapters context */
SK_IOC IoC) /* IO Context */
{
if ((pAC->vpd.v.vpd_status & VPD_VALID) == 0) {
(void)VpdInit(pAC, IoC);
}
return(&pAC->vpd.v);
}
/*
* Read the contents of the VPD EEPROM and copy it to the VPD
* buffer if not already done.
* Scan the VPD buffer for VPD keywords and create the VPD
* keyword list by copying the keywords to 'buf', all after
* each other and terminated with a '\0'.
*
* Exceptions: o The Resource Type ID String (product name) is called "Name"
* o The VPD end tags 'RV' and 'RW' are not listed
*
* The number of copied keywords is counted in 'elements'.
*
* returns 0: success
* 2: buffer overfull, one or more keywords are missing
* 6: fatal VPD error
*
* example values after returning:
*
* buf = "Name\0PN\0EC\0MN\0SN\0CP\0VF\0VL\0YA\0"
* *len = 30
* *elements = 9
*/
int VpdKeys(
SK_AC *pAC, /* common data base */
SK_IOC IoC, /* IO Context */
char *buf, /* buffer where to copy the keywords */
int *len, /* buffer length */
int *elements) /* number of keywords returned */
{
char *v;
int n;
SK_DBG_MSG(pAC, SK_DBGMOD_VPD, SK_DBGCAT_RX, ("list VPD keys .. "));
*elements = 0;
if ((pAC->vpd.v.vpd_status & VPD_VALID) == 0) {
if (VpdInit(pAC, IoC) != 0) {
*len = 0;
SK_DBG_MSG(pAC, SK_DBGMOD_VPD, SK_DBGCAT_ERR,
("VPD Init Error, terminated\n"));
return(6);
}
}
if ((signed)strlen(VPD_NAME) + 1 <= *len) {
v = pAC->vpd.vpd_buf;
strcpy(buf,VPD_NAME);
n = strlen(VPD_NAME) + 1;
buf += n;
*elements = 1;
SK_DBG_MSG(pAC, SK_DBGMOD_VPD, SK_DBGCAT_RX,
("'%c%c' ",v[0],v[1]));
}
else {
*len = 0;
SK_DBG_MSG(pAC,SK_DBGMOD_VPD,SK_DBGCAT_ERR,
("buffer overflow\n"));
return(2);
}
v += 3 + VPD_GET_RES_LEN(v) + 3;
for (;; ) {
/* exit when reaching the "RW" Tag */
if (SK_MEMCMP(VPD_RW,v,2) == 0) {
break;
}
if (SK_MEMCMP(VPD_RV,v,2) == 0) {
v += 3 + VPD_GET_VPD_LEN(v) + 3; /* skip VPD-W */
continue;
}
if (n+3 <= *len) {
SK_MEMCPY(buf,v,2);
buf += 2;
*buf++ = '\0';
n += 3;
v += 3 + VPD_GET_VPD_LEN(v);
*elements += 1;
SK_DBG_MSG(pAC, SK_DBGMOD_VPD, SK_DBGCAT_RX,
("'%c%c' ",v[0],v[1]));
}
else {
*len = n;
SK_DBG_MSG(pAC, SK_DBGMOD_VPD, SK_DBGCAT_ERR,
("buffer overflow\n"));
return(2);
}
}
SK_DBG_MSG(pAC, SK_DBGMOD_VPD, SK_DBGCAT_RX, ("\n"));
*len = n;
return(0);
}
/*
* Read the contents of the VPD EEPROM and copy it to the
* VPD buffer if not already done. Search for the VPD keyword
* 'key' and copy its value to 'buf'. Add a terminating '\0'.
* If the value does not fit into the buffer cut it after
* 'len' - 1 bytes.
*
* returns 0: success
* 1: keyword not found
* 2: value string was cut
* 3: VPD transfer timeout
* 6: fatal VPD error
*/
int VpdRead(
SK_AC *pAC, /* common data base */
SK_IOC IoC, /* IO Context */
const char *key, /* keyword to read (e.g. "MN") */
char *buf, /* buffer where to copy the keyword value */
int *len) /* buffer length */
{
SK_VPD_PARA *p, vp;
SK_DBG_MSG(pAC, SK_DBGMOD_VPD, SK_DBGCAT_RX, ("VPD read %s .. ", key));
if ((pAC->vpd.v.vpd_status & VPD_VALID) == 0) {
if (VpdInit(pAC, IoC) != 0) {
*len = 0;
SK_DBG_MSG(pAC, SK_DBGMOD_VPD, SK_DBGCAT_ERR,
("VPD init error\n"));
return(6);
}
}
if ((p = vpd_find_para(pAC, key, &vp)) != NULL) {
if (p->p_len > (*(unsigned *)len)-1) {
p->p_len = *len - 1;
}
SK_MEMCPY(buf, p->p_val, p->p_len);
buf[p->p_len] = '\0';
*len = p->p_len;
SK_DBG_MSG(pAC, SK_DBGMOD_VPD, SK_DBGCAT_RX,
("%c%c%c%c.., len = %d\n",
buf[0],buf[1],buf[2],buf[3],*len));
}
else {
*len = 0;
SK_DBG_MSG(pAC, SK_DBGMOD_VPD, SK_DBGCAT_ERR, ("not found\n"));
return(1);
}
return(0);
}
/*
* Check whether a given key may be written
*
* returns
* SK_TRUE Yes it may be written
* SK_FALSE No it may be written
*/
SK_BOOL VpdMayWrite(
char *key) /* keyword to write (allowed values "Yx", "Vx") */
{
if ((*key != 'Y' && *key != 'V') ||
key[1] < '0' || key[1] > 'Z' ||
(key[1] > '9' && key[1] < 'A') || strlen(key) != 2) {
return(SK_FALSE);
}
return(SK_TRUE);
}
/*
* Read the contents of the VPD EEPROM and copy it to the VPD
* buffer if not already done. Insert/overwrite the keyword 'key'
* in the VPD buffer. Cut the keyword value if it does not fit
* into the VPD read / write area.
*
* returns 0: success
* 2: value string was cut
* 3: VPD transfer timeout
* 4: VPD full, keyword was not written
* 5: keyword cannot be written
* 6: fatal VPD error
*/
int VpdWrite(
SK_AC *pAC, /* common data base */
SK_IOC IoC, /* IO Context */
const char *key, /* keyword to write (allowed values "Yx", "Vx") */
const char *buf) /* buffer where the keyword value can be read from */
{
int len; /* length of the keyword to write */
int rtv; /* return code */
int rtv2;
SK_DBG_MSG(pAC, SK_DBGMOD_VPD, SK_DBGCAT_TX,
("VPD write %s = %s\n",key,buf));
if ((*key != 'Y' && *key != 'V') ||
key[1] < '0' || key[1] > 'Z' ||
(key[1] > '9' && key[1] < 'A') || strlen(key) != 2) {
SK_DBG_MSG(pAC, SK_DBGMOD_VPD, SK_DBGCAT_ERR,
("illegal key tag, keyword not written\n"));
return(5);
}
if ((pAC->vpd.v.vpd_status & VPD_VALID) == 0) {
if (VpdInit(pAC, IoC) != 0) {
SK_DBG_MSG(pAC, SK_DBGMOD_VPD, SK_DBGCAT_ERR,
("VPD init error\n"));
return(6);
}
}
rtv = 0;
len = strlen(buf);
if (len > VPD_MAX_LEN) {
/* cut it */
len = VPD_MAX_LEN;
rtv = 2;
SK_DBG_MSG(pAC, SK_DBGMOD_VPD, SK_DBGCAT_ERR,
("keyword too long, cut after %d bytes\n",VPD_MAX_LEN));
}
if ((rtv2 = VpdSetupPara(pAC, key, buf, len, VPD_RW_KEY, OWR_KEY)) != 0) {
SK_DBG_MSG(pAC, SK_DBGMOD_VPD, SK_DBGCAT_ERR,
("VPD write error\n"));
return(rtv2);
}
return(rtv);
}
/*
* Read the contents of the VPD EEPROM and copy it to the
* VPD buffer if not already done. Remove the VPD keyword
* 'key' from the VPD buffer.
* Only the keywords in the read/write area can be deleted.
* Keywords in the read only area cannot be deleted.
*
* returns 0: success, keyword was removed
* 1: keyword not found
* 5: keyword cannot be deleted
* 6: fatal VPD error
*/
int VpdDelete(
SK_AC *pAC, /* common data base */
SK_IOC IoC, /* IO Context */
char *key) /* keyword to read (e.g. "MN") */
{
SK_VPD_PARA *p, vp;
char *etp;
int vpd_size;
vpd_size = pAC->vpd.vpd_size;
SK_DBG_MSG(pAC,SK_DBGMOD_VPD,SK_DBGCAT_TX,("VPD delete key %s\n",key));
if ((pAC->vpd.v.vpd_status & VPD_VALID) == 0) {
if (VpdInit(pAC, IoC) != 0) {
SK_DBG_MSG(pAC, SK_DBGMOD_VPD, SK_DBGCAT_ERR,
("VPD init error\n"));
return(6);
}
}
if ((p = vpd_find_para(pAC, key, &vp)) != NULL) {
if (p->p_val < pAC->vpd.vpd_buf + vpd_size/2) {
/* try to delete read only keyword */
SK_DBG_MSG(pAC, SK_DBGMOD_VPD, SK_DBGCAT_ERR,
("cannot delete RO keyword\n"));
return(5);
}
etp = pAC->vpd.vpd_buf + (vpd_size-pAC->vpd.v.vpd_free_rw-1-3);
vpd_move_para(vp.p_val+vp.p_len, etp+2,
- ((int)(vp.p_len + 3)));
if (vpd_mod_endtag(pAC, etp - vp.p_len - 3)) {
pAC->vpd.v.vpd_status &= ~VPD_VALID;
SK_DBG_MSG(pAC, SK_DBGMOD_VPD, SK_DBGCAT_ERR,
("VPD encoding error\n"));
return(6);
}
}
else {
SK_DBG_MSG(pAC, SK_DBGMOD_VPD, SK_DBGCAT_ERR,
("keyword not found\n"));
return(1);
}
return(0);
}
/*
* If the VPD buffer contains valid data write the VPD
* read/write area back to the VPD EEPROM.
*
* returns 0: success
* 3: VPD transfer timeout
*/
int VpdUpdate(
SK_AC *pAC, /* Adapters context */
SK_IOC IoC) /* IO Context */
{
int vpd_size;
vpd_size = pAC->vpd.vpd_size;
SK_DBG_MSG(pAC, SK_DBGMOD_VPD, SK_DBGCAT_TX, ("VPD update .. "));
if ((pAC->vpd.v.vpd_status & VPD_VALID) != 0) {
if (VpdTransferBlock(pAC, IoC, pAC->vpd.vpd_buf + vpd_size/2,
vpd_size/2, vpd_size/2, VPD_WRITE) != vpd_size/2) {
SK_DBG_MSG(pAC, SK_DBGMOD_VPD, SK_DBGCAT_ERR,
("transfer timed out\n"));
return(3);
}
}
SK_DBG_MSG(pAC, SK_DBGMOD_VPD, SK_DBGCAT_TX, ("done\n"));
return(0);
}
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