CXL3.0: Add DVSEC CXLCtrl3 and missing CXLCtl2

[pciutils.git] / lib / init.c

diff --git a/lib/init.c b/lib/init.c
index a310cc54643d00dbf98a3459892cad3b61292aca..fe40f91ccc36c1d4fd5c52595116ab78899f1340 100644 (file)
--- a/lib/init.c
+++ b/lib/init.c
@@ -151,6 +151,11 @@ static struct pci_methods *pci_methods[PCI_ACCESS_MAX] = {
   NULL,
   NULL,
 #endif
+#if defined(PCI_HAVE_PM_ECAM)
+  &pm_ecam,
+#else
+  NULL,
+#endif
 };
 
 // If PCI_ACCESS_AUTO is selected, we probe the access methods in this order
@@ -169,6 +174,7 @@ static int probe_sequence[] = {
   PCI_ACCESS_WIN32_KLDBG,
   PCI_ACCESS_WIN32_SYSDBG,
   // Low-level methods poking the hardware directly
+  PCI_ACCESS_ECAM,
   PCI_ACCESS_I386_TYPE1,
   PCI_ACCESS_I386_TYPE2,
   PCI_ACCESS_MMIO_TYPE1_EXT,
@@ -336,9 +342,16 @@ retry:
        * directory, hence something completely different. So prepend missing
        * "\\\\?\\" prefix to make path valid again.
        * Reproduce: CreateProcessW("\\??\\UNC\\10.0.2.4\\qemu\\lspci.exe", ...)
+       *
+       * If path starts with DOS drive letter and with appended PCI_IDS is
+       * longer than 260 bytes and is without "\\\\?\\" prefix then append it.
+       * This prefix is required for paths and file names with DOS drive letter
+       * longer than 260 bytes.
        */
       if (strncmp(path, "\\UNC\\", 5) == 0 ||
-          strncmp(path, "UNC\\", 4) == 0)
+          strncmp(path, "UNC\\", 4) == 0 ||
+          (((path[0] >= 'a' && path[0] <= 'z') || (path[0] >= 'A' && path[0] <= 'Z')) &&
+           len + sizeof(PCI_IDS) >= 260))
         {
           memmove(path+4, path, len);
           memcpy(path, "\\\\?\\", 4);
@@ -413,8 +426,8 @@ pci_alloc(void)
   return a;
 }
 
-void
-pci_init_v35(struct pci_access *a)
+int
+pci_init_internal(struct pci_access *a, int skip_method)
 {
   if (!a->error)
     a->error = pci_generic_error;
@@ -425,7 +438,7 @@ pci_init_v35(struct pci_access *a)
   if (!a->debugging)
     a->debug = pci_null_debug;
 
-  if (a->method)
+  if (a->method != PCI_ACCESS_AUTO)
     {
       if (a->method >= PCI_ACCESS_MAX || !pci_methods[a->method])
        a->error("This access method is not supported.");
@@ -439,6 +452,8 @@ pci_init_v35(struct pci_access *a)
          struct pci_methods *m = pci_methods[probe_sequence[i]];
          if (!m)
            continue;
+         if (skip_method == probe_sequence[i])
+           continue;
          a->debug("Trying method %s...", m->name);
          if (m->detect(a))
            {
@@ -450,10 +465,18 @@ pci_init_v35(struct pci_access *a)
          a->debug("...No.\n");
        }
       if (!a->methods)
-       a->error("Cannot find any working access method.");
+       return 0;
     }
   a->debug("Decided to use %s\n", a->methods->name);
   a->methods->init(a);
+  return 1;
+}
+
+void
+pci_init_v35(struct pci_access *a)
+{
+  if (!pci_init_internal(a, -1))
+    a->error("Cannot find any working access method.");
 }
 
 STATIC_ALIAS(void pci_init(struct pci_access *a), pci_init_v35(a));
@@ -461,6 +484,21 @@ DEFINE_ALIAS(void pci_init_v30(struct pci_access *a), pci_init_v35);
 SYMBOL_VERSION(pci_init_v30, pci_init@LIBPCI_3.0);
 SYMBOL_VERSION(pci_init_v35, pci_init@@LIBPCI_3.5);
 
+struct pci_access *
+pci_clone_access(struct pci_access *a)
+{
+  struct pci_access *b = pci_alloc();
+
+  b->writeable = a->writeable;
+  b->buscentric = a->buscentric;
+  b->debugging = a->debugging;
+  b->error = a->error;
+  b->warning = a->warning;
+  b->debug = a->debug;
+
+  return b;
+}
+
 void
 pci_cleanup(struct pci_access *a)
 {