LCOV - code coverage report
Current view: top level - drivers/pci - vpd.c (source / functions) Hit Total Coverage
Test: coverage.info Lines: 0 206 0.0 %
Date: 2023-04-06 08:38:28 Functions: 0 22 0.0 %

          Line data    Source code
       1             : // SPDX-License-Identifier: GPL-2.0
       2             : /*
       3             :  * PCI VPD support
       4             :  *
       5             :  * Copyright (C) 2010 Broadcom Corporation.
       6             :  */
       7             : 
       8             : #include <linux/pci.h>
       9             : #include <linux/delay.h>
      10             : #include <linux/export.h>
      11             : #include <linux/sched/signal.h>
      12             : #include <asm/unaligned.h>
      13             : #include "pci.h"
      14             : 
      15             : #define PCI_VPD_LRDT_TAG_SIZE           3
      16             : #define PCI_VPD_SRDT_LEN_MASK           0x07
      17             : #define PCI_VPD_SRDT_TAG_SIZE           1
      18             : #define PCI_VPD_STIN_END                0x0f
      19             : #define PCI_VPD_INFO_FLD_HDR_SIZE       3
      20             : 
      21             : static u16 pci_vpd_lrdt_size(const u8 *lrdt)
      22             : {
      23           0 :         return get_unaligned_le16(lrdt + 1);
      24             : }
      25             : 
      26             : static u8 pci_vpd_srdt_tag(const u8 *srdt)
      27             : {
      28           0 :         return *srdt >> 3;
      29             : }
      30             : 
      31             : static u8 pci_vpd_srdt_size(const u8 *srdt)
      32             : {
      33           0 :         return *srdt & PCI_VPD_SRDT_LEN_MASK;
      34             : }
      35             : 
      36             : static u8 pci_vpd_info_field_size(const u8 *info_field)
      37             : {
      38           0 :         return info_field[2];
      39             : }
      40             : 
      41             : /* VPD access through PCI 2.2+ VPD capability */
      42             : 
      43             : static struct pci_dev *pci_get_func0_dev(struct pci_dev *dev)
      44             : {
      45           0 :         return pci_get_slot(dev->bus, PCI_DEVFN(PCI_SLOT(dev->devfn), 0));
      46             : }
      47             : 
      48             : #define PCI_VPD_MAX_SIZE        (PCI_VPD_ADDR_MASK + 1)
      49             : #define PCI_VPD_SZ_INVALID      UINT_MAX
      50             : 
      51             : /**
      52             :  * pci_vpd_size - determine actual size of Vital Product Data
      53             :  * @dev:        pci device struct
      54             :  */
      55           0 : static size_t pci_vpd_size(struct pci_dev *dev)
      56             : {
      57           0 :         size_t off = 0, size;
      58             :         unsigned char tag, header[1+2]; /* 1 byte tag, 2 bytes length */
      59             : 
      60           0 :         while (pci_read_vpd_any(dev, off, 1, header) == 1) {
      61           0 :                 size = 0;
      62             : 
      63           0 :                 if (off == 0 && (header[0] == 0x00 || header[0] == 0xff))
      64             :                         goto error;
      65             : 
      66           0 :                 if (header[0] & PCI_VPD_LRDT) {
      67             :                         /* Large Resource Data Type Tag */
      68           0 :                         if (pci_read_vpd_any(dev, off + 1, 2, &header[1]) != 2) {
      69           0 :                                 pci_warn(dev, "failed VPD read at offset %zu\n",
      70             :                                          off + 1);
      71           0 :                                 return off ?: PCI_VPD_SZ_INVALID;
      72             :                         }
      73           0 :                         size = pci_vpd_lrdt_size(header);
      74           0 :                         if (off + size > PCI_VPD_MAX_SIZE)
      75             :                                 goto error;
      76             : 
      77           0 :                         off += PCI_VPD_LRDT_TAG_SIZE + size;
      78             :                 } else {
      79             :                         /* Short Resource Data Type Tag */
      80           0 :                         tag = pci_vpd_srdt_tag(header);
      81           0 :                         size = pci_vpd_srdt_size(header);
      82           0 :                         if (off + size > PCI_VPD_MAX_SIZE)
      83             :                                 goto error;
      84             : 
      85           0 :                         off += PCI_VPD_SRDT_TAG_SIZE + size;
      86           0 :                         if (tag == PCI_VPD_STIN_END)    /* End tag descriptor */
      87             :                                 return off;
      88             :                 }
      89             :         }
      90             :         return off;
      91             : 
      92             : error:
      93           0 :         pci_info(dev, "invalid VPD tag %#04x (size %zu) at offset %zu%s\n",
      94             :                  header[0], size, off, off == 0 ?
      95             :                  "; assume missing optional EEPROM" : "");
      96           0 :         return off ?: PCI_VPD_SZ_INVALID;
      97             : }
      98             : 
      99           0 : static bool pci_vpd_available(struct pci_dev *dev, bool check_size)
     100             : {
     101           0 :         struct pci_vpd *vpd = &dev->vpd;
     102             : 
     103           0 :         if (!vpd->cap)
     104             :                 return false;
     105             : 
     106           0 :         if (vpd->len == 0 && check_size) {
     107           0 :                 vpd->len = pci_vpd_size(dev);
     108           0 :                 if (vpd->len == PCI_VPD_SZ_INVALID) {
     109           0 :                         vpd->cap = 0;
     110           0 :                         return false;
     111             :                 }
     112             :         }
     113             : 
     114             :         return true;
     115             : }
     116             : 
     117             : /*
     118             :  * Wait for last operation to complete.
     119             :  * This code has to spin since there is no other notification from the PCI
     120             :  * hardware. Since the VPD is often implemented by serial attachment to an
     121             :  * EEPROM, it may take many milliseconds to complete.
     122             :  * @set: if true wait for flag to be set, else wait for it to be cleared
     123             :  *
     124             :  * Returns 0 on success, negative values indicate error.
     125             :  */
     126           0 : static int pci_vpd_wait(struct pci_dev *dev, bool set)
     127             : {
     128           0 :         struct pci_vpd *vpd = &dev->vpd;
     129           0 :         unsigned long timeout = jiffies + msecs_to_jiffies(125);
     130           0 :         unsigned long max_sleep = 16;
     131             :         u16 status;
     132             :         int ret;
     133             : 
     134             :         do {
     135           0 :                 ret = pci_user_read_config_word(dev, vpd->cap + PCI_VPD_ADDR,
     136             :                                                 &status);
     137           0 :                 if (ret < 0)
     138             :                         return ret;
     139             : 
     140           0 :                 if (!!(status & PCI_VPD_ADDR_F) == set)
     141             :                         return 0;
     142             : 
     143           0 :                 if (time_after(jiffies, timeout))
     144             :                         break;
     145             : 
     146           0 :                 usleep_range(10, max_sleep);
     147           0 :                 if (max_sleep < 1024)
     148           0 :                         max_sleep *= 2;
     149             :         } while (true);
     150             : 
     151           0 :         pci_warn(dev, "VPD access failed.  This is likely a firmware bug on this device.  Contact the card vendor for a firmware update\n");
     152           0 :         return -ETIMEDOUT;
     153             : }
     154             : 
     155           0 : static ssize_t pci_vpd_read(struct pci_dev *dev, loff_t pos, size_t count,
     156             :                             void *arg, bool check_size)
     157             : {
     158           0 :         struct pci_vpd *vpd = &dev->vpd;
     159             :         unsigned int max_len;
     160           0 :         int ret = 0;
     161           0 :         loff_t end = pos + count;
     162           0 :         u8 *buf = arg;
     163             : 
     164           0 :         if (!pci_vpd_available(dev, check_size))
     165             :                 return -ENODEV;
     166             : 
     167           0 :         if (pos < 0)
     168             :                 return -EINVAL;
     169             : 
     170           0 :         max_len = check_size ? vpd->len : PCI_VPD_MAX_SIZE;
     171             : 
     172           0 :         if (pos >= max_len)
     173             :                 return 0;
     174             : 
     175           0 :         if (end > max_len) {
     176           0 :                 end = max_len;
     177           0 :                 count = end - pos;
     178             :         }
     179             : 
     180           0 :         if (mutex_lock_killable(&vpd->lock))
     181             :                 return -EINTR;
     182             : 
     183           0 :         while (pos < end) {
     184             :                 u32 val;
     185             :                 unsigned int i, skip;
     186             : 
     187           0 :                 if (fatal_signal_pending(current)) {
     188             :                         ret = -EINTR;
     189           0 :                         break;
     190             :                 }
     191             : 
     192           0 :                 ret = pci_user_write_config_word(dev, vpd->cap + PCI_VPD_ADDR,
     193           0 :                                                  pos & ~3);
     194           0 :                 if (ret < 0)
     195             :                         break;
     196           0 :                 ret = pci_vpd_wait(dev, true);
     197           0 :                 if (ret < 0)
     198             :                         break;
     199             : 
     200           0 :                 ret = pci_user_read_config_dword(dev, vpd->cap + PCI_VPD_DATA, &val);
     201           0 :                 if (ret < 0)
     202             :                         break;
     203             : 
     204           0 :                 skip = pos & 3;
     205           0 :                 for (i = 0;  i < sizeof(u32); i++) {
     206           0 :                         if (i >= skip) {
     207           0 :                                 *buf++ = val;
     208           0 :                                 if (++pos == end)
     209             :                                         break;
     210             :                         }
     211           0 :                         val >>= 8;
     212             :                 }
     213             :         }
     214             : 
     215           0 :         mutex_unlock(&vpd->lock);
     216           0 :         return ret ? ret : count;
     217             : }
     218             : 
     219           0 : static ssize_t pci_vpd_write(struct pci_dev *dev, loff_t pos, size_t count,
     220             :                              const void *arg, bool check_size)
     221             : {
     222           0 :         struct pci_vpd *vpd = &dev->vpd;
     223             :         unsigned int max_len;
     224           0 :         const u8 *buf = arg;
     225           0 :         loff_t end = pos + count;
     226           0 :         int ret = 0;
     227             : 
     228           0 :         if (!pci_vpd_available(dev, check_size))
     229             :                 return -ENODEV;
     230             : 
     231           0 :         if (pos < 0 || (pos & 3) || (count & 3))
     232             :                 return -EINVAL;
     233             : 
     234           0 :         max_len = check_size ? vpd->len : PCI_VPD_MAX_SIZE;
     235             : 
     236           0 :         if (end > max_len)
     237             :                 return -EINVAL;
     238             : 
     239           0 :         if (mutex_lock_killable(&vpd->lock))
     240             :                 return -EINTR;
     241             : 
     242           0 :         while (pos < end) {
     243           0 :                 ret = pci_user_write_config_dword(dev, vpd->cap + PCI_VPD_DATA,
     244             :                                                   get_unaligned_le32(buf));
     245           0 :                 if (ret < 0)
     246             :                         break;
     247           0 :                 ret = pci_user_write_config_word(dev, vpd->cap + PCI_VPD_ADDR,
     248           0 :                                                  pos | PCI_VPD_ADDR_F);
     249           0 :                 if (ret < 0)
     250             :                         break;
     251             : 
     252           0 :                 ret = pci_vpd_wait(dev, false);
     253           0 :                 if (ret < 0)
     254             :                         break;
     255             : 
     256           0 :                 buf += sizeof(u32);
     257           0 :                 pos += sizeof(u32);
     258             :         }
     259             : 
     260           0 :         mutex_unlock(&vpd->lock);
     261           0 :         return ret ? ret : count;
     262             : }
     263             : 
     264           0 : void pci_vpd_init(struct pci_dev *dev)
     265             : {
     266           0 :         if (dev->vpd.len == PCI_VPD_SZ_INVALID)
     267             :                 return;
     268             : 
     269           0 :         dev->vpd.cap = pci_find_capability(dev, PCI_CAP_ID_VPD);
     270           0 :         mutex_init(&dev->vpd.lock);
     271             : }
     272             : 
     273           0 : static ssize_t vpd_read(struct file *filp, struct kobject *kobj,
     274             :                         struct bin_attribute *bin_attr, char *buf, loff_t off,
     275             :                         size_t count)
     276             : {
     277           0 :         struct pci_dev *dev = to_pci_dev(kobj_to_dev(kobj));
     278             : 
     279           0 :         return pci_read_vpd(dev, off, count, buf);
     280             : }
     281             : 
     282           0 : static ssize_t vpd_write(struct file *filp, struct kobject *kobj,
     283             :                          struct bin_attribute *bin_attr, char *buf, loff_t off,
     284             :                          size_t count)
     285             : {
     286           0 :         struct pci_dev *dev = to_pci_dev(kobj_to_dev(kobj));
     287             : 
     288           0 :         return pci_write_vpd(dev, off, count, buf);
     289             : }
     290             : static BIN_ATTR(vpd, 0600, vpd_read, vpd_write, 0);
     291             : 
     292             : static struct bin_attribute *vpd_attrs[] = {
     293             :         &bin_attr_vpd,
     294             :         NULL,
     295             : };
     296             : 
     297           0 : static umode_t vpd_attr_is_visible(struct kobject *kobj,
     298             :                                    struct bin_attribute *a, int n)
     299             : {
     300           0 :         struct pci_dev *pdev = to_pci_dev(kobj_to_dev(kobj));
     301             : 
     302           0 :         if (!pdev->vpd.cap)
     303             :                 return 0;
     304             : 
     305           0 :         return a->attr.mode;
     306             : }
     307             : 
     308             : const struct attribute_group pci_dev_vpd_attr_group = {
     309             :         .bin_attrs = vpd_attrs,
     310             :         .is_bin_visible = vpd_attr_is_visible,
     311             : };
     312             : 
     313           0 : void *pci_vpd_alloc(struct pci_dev *dev, unsigned int *size)
     314             : {
     315             :         unsigned int len;
     316             :         void *buf;
     317             :         int cnt;
     318             : 
     319           0 :         if (!pci_vpd_available(dev, true))
     320             :                 return ERR_PTR(-ENODEV);
     321             : 
     322           0 :         len = dev->vpd.len;
     323           0 :         buf = kmalloc(len, GFP_KERNEL);
     324           0 :         if (!buf)
     325             :                 return ERR_PTR(-ENOMEM);
     326             : 
     327           0 :         cnt = pci_read_vpd(dev, 0, len, buf);
     328           0 :         if (cnt != len) {
     329           0 :                 kfree(buf);
     330           0 :                 return ERR_PTR(-EIO);
     331             :         }
     332             : 
     333           0 :         if (size)
     334           0 :                 *size = len;
     335             : 
     336             :         return buf;
     337             : }
     338             : EXPORT_SYMBOL_GPL(pci_vpd_alloc);
     339             : 
     340             : static int pci_vpd_find_tag(const u8 *buf, unsigned int len, u8 rdt, unsigned int *size)
     341             : {
     342           0 :         int i = 0;
     343             : 
     344             :         /* look for LRDT tags only, end tag is the only SRDT tag */
     345           0 :         while (i + PCI_VPD_LRDT_TAG_SIZE <= len && buf[i] & PCI_VPD_LRDT) {
     346           0 :                 unsigned int lrdt_len = pci_vpd_lrdt_size(buf + i);
     347           0 :                 u8 tag = buf[i];
     348             : 
     349           0 :                 i += PCI_VPD_LRDT_TAG_SIZE;
     350           0 :                 if (tag == rdt) {
     351           0 :                         if (i + lrdt_len > len)
     352           0 :                                 lrdt_len = len - i;
     353           0 :                         if (size)
     354           0 :                                 *size = lrdt_len;
     355             :                         return i;
     356             :                 }
     357             : 
     358           0 :                 i += lrdt_len;
     359             :         }
     360             : 
     361             :         return -ENOENT;
     362             : }
     363             : 
     364           0 : int pci_vpd_find_id_string(const u8 *buf, unsigned int len, unsigned int *size)
     365             : {
     366           0 :         return pci_vpd_find_tag(buf, len, PCI_VPD_LRDT_ID_STRING, size);
     367             : }
     368             : EXPORT_SYMBOL_GPL(pci_vpd_find_id_string);
     369             : 
     370             : static int pci_vpd_find_info_keyword(const u8 *buf, unsigned int off,
     371             :                               unsigned int len, const char *kw)
     372             : {
     373             :         int i;
     374             : 
     375           0 :         for (i = off; i + PCI_VPD_INFO_FLD_HDR_SIZE <= off + len;) {
     376           0 :                 if (buf[i + 0] == kw[0] &&
     377           0 :                     buf[i + 1] == kw[1])
     378             :                         return i;
     379             : 
     380           0 :                 i += PCI_VPD_INFO_FLD_HDR_SIZE +
     381           0 :                      pci_vpd_info_field_size(&buf[i]);
     382             :         }
     383             : 
     384             :         return -ENOENT;
     385             : }
     386             : 
     387           0 : static ssize_t __pci_read_vpd(struct pci_dev *dev, loff_t pos, size_t count, void *buf,
     388             :                               bool check_size)
     389             : {
     390             :         ssize_t ret;
     391             : 
     392           0 :         if (dev->dev_flags & PCI_DEV_FLAGS_VPD_REF_F0) {
     393           0 :                 dev = pci_get_func0_dev(dev);
     394           0 :                 if (!dev)
     395             :                         return -ENODEV;
     396             : 
     397           0 :                 ret = pci_vpd_read(dev, pos, count, buf, check_size);
     398           0 :                 pci_dev_put(dev);
     399           0 :                 return ret;
     400             :         }
     401             : 
     402           0 :         return pci_vpd_read(dev, pos, count, buf, check_size);
     403             : }
     404             : 
     405             : /**
     406             :  * pci_read_vpd - Read one entry from Vital Product Data
     407             :  * @dev:        PCI device struct
     408             :  * @pos:        offset in VPD space
     409             :  * @count:      number of bytes to read
     410             :  * @buf:        pointer to where to store result
     411             :  */
     412           0 : ssize_t pci_read_vpd(struct pci_dev *dev, loff_t pos, size_t count, void *buf)
     413             : {
     414           0 :         return __pci_read_vpd(dev, pos, count, buf, true);
     415             : }
     416             : EXPORT_SYMBOL(pci_read_vpd);
     417             : 
     418             : /* Same, but allow to access any address */
     419           0 : ssize_t pci_read_vpd_any(struct pci_dev *dev, loff_t pos, size_t count, void *buf)
     420             : {
     421           0 :         return __pci_read_vpd(dev, pos, count, buf, false);
     422             : }
     423             : EXPORT_SYMBOL(pci_read_vpd_any);
     424             : 
     425           0 : static ssize_t __pci_write_vpd(struct pci_dev *dev, loff_t pos, size_t count,
     426             :                                const void *buf, bool check_size)
     427             : {
     428             :         ssize_t ret;
     429             : 
     430           0 :         if (dev->dev_flags & PCI_DEV_FLAGS_VPD_REF_F0) {
     431           0 :                 dev = pci_get_func0_dev(dev);
     432           0 :                 if (!dev)
     433             :                         return -ENODEV;
     434             : 
     435           0 :                 ret = pci_vpd_write(dev, pos, count, buf, check_size);
     436           0 :                 pci_dev_put(dev);
     437           0 :                 return ret;
     438             :         }
     439             : 
     440           0 :         return pci_vpd_write(dev, pos, count, buf, check_size);
     441             : }
     442             : 
     443             : /**
     444             :  * pci_write_vpd - Write entry to Vital Product Data
     445             :  * @dev:        PCI device struct
     446             :  * @pos:        offset in VPD space
     447             :  * @count:      number of bytes to write
     448             :  * @buf:        buffer containing write data
     449             :  */
     450           0 : ssize_t pci_write_vpd(struct pci_dev *dev, loff_t pos, size_t count, const void *buf)
     451             : {
     452           0 :         return __pci_write_vpd(dev, pos, count, buf, true);
     453             : }
     454             : EXPORT_SYMBOL(pci_write_vpd);
     455             : 
     456             : /* Same, but allow to access any address */
     457           0 : ssize_t pci_write_vpd_any(struct pci_dev *dev, loff_t pos, size_t count, const void *buf)
     458             : {
     459           0 :         return __pci_write_vpd(dev, pos, count, buf, false);
     460             : }
     461             : EXPORT_SYMBOL(pci_write_vpd_any);
     462             : 
     463           0 : int pci_vpd_find_ro_info_keyword(const void *buf, unsigned int len,
     464             :                                  const char *kw, unsigned int *size)
     465             : {
     466             :         int ro_start, infokw_start;
     467             :         unsigned int ro_len, infokw_size;
     468             : 
     469           0 :         ro_start = pci_vpd_find_tag(buf, len, PCI_VPD_LRDT_RO_DATA, &ro_len);
     470           0 :         if (ro_start < 0)
     471             :                 return ro_start;
     472             : 
     473           0 :         infokw_start = pci_vpd_find_info_keyword(buf, ro_start, ro_len, kw);
     474           0 :         if (infokw_start < 0)
     475             :                 return infokw_start;
     476             : 
     477           0 :         infokw_size = pci_vpd_info_field_size(buf + infokw_start);
     478           0 :         infokw_start += PCI_VPD_INFO_FLD_HDR_SIZE;
     479             : 
     480           0 :         if (infokw_start + infokw_size > len)
     481             :                 return -EINVAL;
     482             : 
     483           0 :         if (size)
     484           0 :                 *size = infokw_size;
     485             : 
     486             :         return infokw_start;
     487             : }
     488             : EXPORT_SYMBOL_GPL(pci_vpd_find_ro_info_keyword);
     489             : 
     490           0 : int pci_vpd_check_csum(const void *buf, unsigned int len)
     491             : {
     492           0 :         const u8 *vpd = buf;
     493             :         unsigned int size;
     494           0 :         u8 csum = 0;
     495             :         int rv_start;
     496             : 
     497           0 :         rv_start = pci_vpd_find_ro_info_keyword(buf, len, PCI_VPD_RO_KEYWORD_CHKSUM, &size);
     498           0 :         if (rv_start == -ENOENT) /* no checksum in VPD */
     499             :                 return 1;
     500           0 :         else if (rv_start < 0)
     501             :                 return rv_start;
     502             : 
     503           0 :         if (!size)
     504             :                 return -EINVAL;
     505             : 
     506           0 :         while (rv_start >= 0)
     507           0 :                 csum += vpd[rv_start--];
     508             : 
     509           0 :         return csum ? -EILSEQ : 0;
     510             : }
     511             : EXPORT_SYMBOL_GPL(pci_vpd_check_csum);
     512             : 
     513             : #ifdef CONFIG_PCI_QUIRKS
     514             : /*
     515             :  * Quirk non-zero PCI functions to route VPD access through function 0 for
     516             :  * devices that share VPD resources between functions.  The functions are
     517             :  * expected to be identical devices.
     518             :  */
     519           0 : static void quirk_f0_vpd_link(struct pci_dev *dev)
     520             : {
     521             :         struct pci_dev *f0;
     522             : 
     523           0 :         if (!PCI_FUNC(dev->devfn))
     524             :                 return;
     525             : 
     526           0 :         f0 = pci_get_func0_dev(dev);
     527           0 :         if (!f0)
     528             :                 return;
     529             : 
     530           0 :         if (f0->vpd.cap && dev->class == f0->class &&
     531           0 :             dev->vendor == f0->vendor && dev->device == f0->device)
     532           0 :                 dev->dev_flags |= PCI_DEV_FLAGS_VPD_REF_F0;
     533             : 
     534           0 :         pci_dev_put(f0);
     535             : }
     536             : DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, PCI_ANY_ID,
     537             :                               PCI_CLASS_NETWORK_ETHERNET, 8, quirk_f0_vpd_link);
     538             : 
     539             : /*
     540             :  * If a device follows the VPD format spec, the PCI core will not read or
     541             :  * write past the VPD End Tag.  But some vendors do not follow the VPD
     542             :  * format spec, so we can't tell how much data is safe to access.  Devices
     543             :  * may behave unpredictably if we access too much.  Blacklist these devices
     544             :  * so we don't touch VPD at all.
     545             :  */
     546           0 : static void quirk_blacklist_vpd(struct pci_dev *dev)
     547             : {
     548           0 :         dev->vpd.len = PCI_VPD_SZ_INVALID;
     549           0 :         pci_warn(dev, FW_BUG "disabling VPD access (can't determine size of non-standard VPD format)\n");
     550           0 : }
     551             : DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_LSI_LOGIC, 0x0060, quirk_blacklist_vpd);
     552             : DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_LSI_LOGIC, 0x007c, quirk_blacklist_vpd);
     553             : DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_LSI_LOGIC, 0x0413, quirk_blacklist_vpd);
     554             : DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_LSI_LOGIC, 0x0078, quirk_blacklist_vpd);
     555             : DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_LSI_LOGIC, 0x0079, quirk_blacklist_vpd);
     556             : DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_LSI_LOGIC, 0x0073, quirk_blacklist_vpd);
     557             : DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_LSI_LOGIC, 0x0071, quirk_blacklist_vpd);
     558             : DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_LSI_LOGIC, 0x005b, quirk_blacklist_vpd);
     559             : DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_LSI_LOGIC, 0x002f, quirk_blacklist_vpd);
     560             : DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_LSI_LOGIC, 0x005d, quirk_blacklist_vpd);
     561             : DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_LSI_LOGIC, 0x005f, quirk_blacklist_vpd);
     562             : DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATTANSIC, PCI_ANY_ID, quirk_blacklist_vpd);
     563             : /*
     564             :  * The Amazon Annapurna Labs 0x0031 device id is reused for other non Root Port
     565             :  * device types, so the quirk is registered for the PCI_CLASS_BRIDGE_PCI class.
     566             :  */
     567             : DECLARE_PCI_FIXUP_CLASS_HEADER(PCI_VENDOR_ID_AMAZON_ANNAPURNA_LABS, 0x0031,
     568             :                                PCI_CLASS_BRIDGE_PCI, 8, quirk_blacklist_vpd);
     569             : 
     570           0 : static void quirk_chelsio_extend_vpd(struct pci_dev *dev)
     571             : {
     572           0 :         int chip = (dev->device & 0xf000) >> 12;
     573           0 :         int func = (dev->device & 0x0f00) >>  8;
     574           0 :         int prod = (dev->device & 0x00ff) >>  0;
     575             : 
     576             :         /*
     577             :          * If this is a T3-based adapter, there's a 1KB VPD area at offset
     578             :          * 0xc00 which contains the preferred VPD values.  If this is a T4 or
     579             :          * later based adapter, the special VPD is at offset 0x400 for the
     580             :          * Physical Functions (the SR-IOV Virtual Functions have no VPD
     581             :          * Capabilities).  The PCI VPD Access core routines will normally
     582             :          * compute the size of the VPD by parsing the VPD Data Structure at
     583             :          * offset 0x000.  This will result in silent failures when attempting
     584             :          * to accesses these other VPD areas which are beyond those computed
     585             :          * limits.
     586             :          */
     587           0 :         if (chip == 0x0 && prod >= 0x20)
     588           0 :                 dev->vpd.len = 8192;
     589           0 :         else if (chip >= 0x4 && func < 0x8)
     590           0 :                 dev->vpd.len = 2048;
     591           0 : }
     592             : 
     593             : DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_CHELSIO, PCI_ANY_ID,
     594             :                          quirk_chelsio_extend_vpd);
     595             : 
     596             : #endif

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