diff options
Diffstat (limited to 'drivers/net/sk98lin/skvpd.c')
| -rw-r--r-- | drivers/net/sk98lin/skvpd.c | 1091 |
1 files changed, 1091 insertions, 0 deletions
diff --git a/drivers/net/sk98lin/skvpd.c b/drivers/net/sk98lin/skvpd.c new file mode 100644 index 00000000000..1e662aaebf8 --- /dev/null +++ b/drivers/net/sk98lin/skvpd.c @@ -0,0 +1,1091 @@ +/****************************************************************************** + * + * 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); +} + |