WebSVN – HelenOS-historic – Diff – /uspace/trunk/pci/libpci/i386-ports.c

 #include "internal.h"
 static inline void outb(u8 b, u16 port)
+{
-    asm volatile ("outb %0, %1\n" : : "a" (b), "d" (port));
+    asm volatile ("outb %0, %1\n" :: "a" (b), "d" (port));
+}
 static inline void outw(u16 w, u16 port)
+{
-    asm volatile ("outw %0, %1\n" : : "a" (w), "d" (port));
+    asm volatile ("outw %0, %1\n" :: "a" (w), "d" (port));
+}
 static inline void outl(u32 l, u16 port)
+{
-    asm volatile ("outl %0, %1\n" : : "a" (l), "d" (port));
+    asm volatile ("outl %0, %1\n" :: "a" (l), "d" (port));
+}
 static inline u8 inb(u16 port)
+{
     u8 val;
-    asm volatile ("inb %1, %0 \n" : "=a" (val) : "d" (port));
+    asm volatile ("inb %1, %0 \n" : "=a" (val) : "d"(port));
     return val;
+}
 static inline u16 inw(u16 port)
+{
     u16 val;
-    asm volatile ("inw %1, %0 \n" : "=a" (val) : "d" (port));
+    asm volatile ("inw %1, %0 \n" : "=a" (val) : "d"(port));
     return val;
+}
 static inline u32 inl(u16 port)
+{
     u32 val;
-    asm volatile ("inl %1, %0 \n" : "=a" (val) : "d" (port));
+    asm volatile ("inl %1, %0 \n" : "=a" (val) : "d"(port));
     return val;
+}
-static void
-conf12_init(struct pci_access *a)
+static void conf12_init(struct pci_access *a)
+{
+}
-static void
-conf12_cleanup(struct pci_access *a UNUSED)
+static void conf12_cleanup(struct pci_access *a UNUSED)
+{
+}
 /*
  * Before we decide to use direct hardware access mechanisms, we try to do some
+ *
  * This should be close to trivial, but it isn't, because there are buggy
  * chipsets (yes, you guessed it, by Intel and Compaq) that have no class ID.
  */
-static int
-intel_sanity_check(struct pci_access *a, struct pci_methods *m)
+static int intel_sanity_check(struct pci_access *a, struct pci_methods *m)
+{
-  struct pci_dev d;
+    struct pci_dev d;
-  a->debug("...sanity check");
+    a->debug("...sanity check");
-  d.bus = 0;
+    d.bus = 0;
-  d.func = 0;
+    d.func = 0;
-  for(d.dev = 0; d.dev < 32; d.dev++)
+    for (d.dev = 0; d.dev < 32; d.dev++) {
-    {
-      u16 class, vendor;
+        u16 class, vendor;
+        if (m->
-      if (m->read(&d, PCI_CLASS_DEVICE, (byte *) &class, sizeof(class)) &&
+            read(&d, PCI_CLASS_DEVICE, (byte *) & class,
+             sizeof(class))
+            && (class == cpu_to_le16(PCI_CLASS_BRIDGE_HOST)
-      (class == cpu_to_le16(PCI_CLASS_BRIDGE_HOST) || class == cpu_to_le16(PCI_CLASS_DISPLAY_VGA)) ||
+            || class == cpu_to_le16(PCI_CLASS_DISPLAY_VGA))
-      m->read(&d, PCI_VENDOR_ID, (byte *) &vendor, sizeof(vendor)) &&
+            || m->read(&d, PCI_VENDOR_ID, (byte *) & vendor,
+                   sizeof(vendor))
+            && (vendor == cpu_to_le16(PCI_VENDOR_ID_INTEL)
-      (vendor == cpu_to_le16(PCI_VENDOR_ID_INTEL) || vendor == cpu_to_le16(PCI_VENDOR_ID_COMPAQ)))
+            || vendor == cpu_to_le16(PCI_VENDOR_ID_COMPAQ))) {
-    {
-      a->debug("...outside the Asylum at 0/%02x/0", d.dev);
+            a->debug("...outside the Asylum at 0/%02x/0",
+                 d.dev);
-      return 1;
+            return 1;
+        }
+    }
-    }
-  a->debug("...insane");
+    a->debug("...insane");
-  return 0;
+    return 0;
+}
 /*
  *  Configuration type 1
  */
 #define CONFIG_CMD(bus, device_fn, where)   (0x80000000 | (bus << 16) | (device_fn << 8) | (where & ~3))
-static int
-conf1_detect(struct pci_access *a)
+static int conf1_detect(struct pci_access *a)
+{
-  unsigned int tmp;
+    unsigned int tmp;
-  int res = 0;
+    int res = 0;
-  outb (0x01, 0xCFB);
+    outb(0x01, 0xCFB);
-  tmp = inl (0xCF8);
+    tmp = inl(0xCF8);
-  outl (0x80000000, 0xCF8);
+    outl(0x80000000, 0xCF8);
-  if (inl (0xCF8) == 0x80000000)
+    if (inl(0xCF8) == 0x80000000)
-    res = 1;
+        res = 1;
-  outl (tmp, 0xCF8);
+    outl(tmp, 0xCF8);
-  if (res)
+    if (res)
-    res = intel_sanity_check(a, &pm_intel_conf1);
+        res = intel_sanity_check(a, &pm_intel_conf1);
-  return res;
+    return res;
 }
-static int
-conf1_read(struct pci_dev *d, int pos, byte *buf, int len)
+static int conf1_read(struct pci_dev *d, int pos, byte * buf, int len)
 {
-  int addr = 0xcfc + (pos&3);
+    int addr = 0xcfc + (pos & 3);
-  if (pos >= 256)
+    if (pos >= 256)
-    return 0;
+        return 0;
+    outl(0x80000000 | ((d->bus & 0xff) << 16) |
-  outl(0x80000000 | ((d->bus & 0xff) << 16) | (PCI_DEVFN(d->dev, d->func) << 8) | (pos&~3), 0xcf8);
+         (PCI_DEVFN(d->dev, d->func) << 8) | (pos & ~3), 0xcf8);
-  switch (len)
+    switch (len) {
-    {
     case 1:
-      buf[0] = inb(addr);
+        buf[0] = inb(addr);
-      break;
+        break;
     case 2:
-      ((u16 *) buf)[0] = cpu_to_le16(inw(addr));
+        ((u16 *) buf)[0] = cpu_to_le16(inw(addr));
-      break;
+        break;
     case 4:
-      ((u32 *) buf)[0] = cpu_to_le32(inl(addr));
+        ((u32 *) buf)[0] = cpu_to_le32(inl(addr));
-      break;
+        break;
     default:
-      return pci_generic_block_read(d, pos, buf, len);
+        return pci_generic_block_read(d, pos, buf, len);
     }
-  return 1;
+    return 1;
 }
-static int
-conf1_write(struct pci_dev *d, int pos, byte *buf, int len)
+static int conf1_write(struct pci_dev *d, int pos, byte * buf, int len)
 {
-  int addr = 0xcfc + (pos&3);
+    int addr = 0xcfc + (pos & 3);
-  if (pos >= 256)
+    if (pos >= 256)
-    return 0;
+        return 0;
+    outl(0x80000000 | ((d->bus & 0xff) << 16) |
-  outl(0x80000000 | ((d->bus & 0xff) << 16) | (PCI_DEVFN(d->dev, d->func) << 8) | (pos&~3), 0xcf8);
+         (PCI_DEVFN(d->dev, d->func) << 8) | (pos & ~3), 0xcf8);
-  switch (len)
+    switch (len) {
-    {
     case 1:
-      outb(buf[0], addr);
+        outb(buf[0], addr);
-      break;
+        break;
     case 2:
-      outw(le16_to_cpu(((u16 *) buf)[0]), addr);
+        outw(le16_to_cpu(((u16 *) buf)[0]), addr);
-      break;
+        break;
     case 4:
-      outl(le32_to_cpu(((u32 *) buf)[0]), addr);
+        outl(le32_to_cpu(((u32 *) buf)[0]), addr);
-      break;
+        break;
     default:
-      return pci_generic_block_write(d, pos, buf, len);
+        return pci_generic_block_write(d, pos, buf, len);
     }
-  return 1;
+    return 1;
+}
 /*
  *  Configuration type 2. Obsolete and brain-damaged, but existing.
  */
-static int
-conf2_detect(struct pci_access *a)
+static int conf2_detect(struct pci_access *a)
+{
-  /* This is ugly and tends to produce false positives. Beware. */
+    /* This is ugly and tends to produce false positives. Beware. */
+    outb(0x00, 0xCFB);
+    outb(0x00, 0xCF8);
+    outb(0x00, 0xCFA);
+    if (inb(0xCF8) == 0x00 && inb(0xCFA) == 0x00)
+        return intel_sanity_check(a, &pm_intel_conf2);
+    else
+        return 0;
+}
+static int conf2_read(struct pci_dev *d, int pos, byte * buf, int len)
+{
+    int addr = 0xc000 | (d->dev << 8) | pos;
+    if (pos >= 256)
+        return 0;
+    if (d->dev >= 16)
+        /* conf2 supports only 16 devices per bus */
+        return 0;
+    outb((d->func << 1) | 0xf0, 0xcf8);
+    outb(d->bus, 0xcfa);
+    switch (len) {
+    case 1:
+        buf[0] = inb(addr);
+        break;
+    case 2:
+        ((u16 *) buf)[0] = cpu_to_le16(inw(addr));
+        break;
+    case 4:
+        ((u32 *) buf)[0] = cpu_to_le32(inl(addr));
+        break;
+    default:
+        outb(0, 0xcf8);
+        return pci_generic_block_read(d, pos, buf, len);
+    }
+    outb(0, 0xcf8);
+    return 1;
+}
-  outb(0x00, 0xCFB);
-  outb(0x00, 0xCF8);
-  outb(0x00, 0xCFA);
-  if (inb(0xCF8) == 0x00 && inb(0xCFA) == 0x00)
-    return intel_sanity_check(a, &pm_intel_conf2);
-  else
-    return 0;
-}
-static int
-conf2_read(struct pci_dev *d, int pos, byte *buf, int len)
+static int conf2_write(struct pci_dev *d, int pos, byte * buf, int len)
 {
-  int addr = 0xc000 | (d->dev << 8) | pos;
+    int addr = 0xc000 | (d->dev << 8) | pos;
-  if (pos >= 256)
+    if (pos >= 256)
-    return 0;
+        return 0;
-  if (d->dev >= 16)
+    if (d->dev >= 16)
-    /* conf2 supports only 16 devices per bus */
-    return 0;
-  outb((d->func << 1) | 0xf0, 0xcf8);
-  outb(d->bus, 0xcfa);
-  switch (len)
-    {
-    case 1:
-      buf[0] = inb(addr);
-      break;
-    case 2:
-      ((u16 *) buf)[0] = cpu_to_le16(inw(addr));
-      break;
-    case 4:
+        d->access->
-      ((u32 *) buf)[0] = cpu_to_le32(inl(addr));
-      break;
-    default:
-      outb(0, 0xcf8);
-      return pci_generic_block_read(d, pos, buf, len);
-    }
-  outb(0, 0xcf8);
-  return 1;
-}
-static int
-conf2_write(struct pci_dev *d, int pos, byte *buf, int len)
-{
-  int addr = 0xc000 | (d->dev << 8) | pos;
-  if (pos >= 256)
-    return 0;
-  if (d->dev >= 16)
-    d->access->error("conf2_write: only first 16 devices exist.");
+            error("conf2_write: only first 16 devices exist.");
-  outb((d->func << 1) | 0xf0, 0xcf8);
+    outb((d->func << 1) | 0xf0, 0xcf8);
-  outb(d->bus, 0xcfa);
+    outb(d->bus, 0xcfa);
-  switch (len)
+    switch (len) {
-    {
     case 1:
-      outb(buf[0], addr);
+        outb(buf[0], addr);
-      break;
+        break;
     case 2:
-      outw(le16_to_cpu(* (u16 *) buf), addr);
+        outw(le16_to_cpu(*(u16 *) buf), addr);
-      break;
+        break;
     case 4:
-      outl(le32_to_cpu(* (u32 *) buf), addr);
+        outl(le32_to_cpu(*(u32 *) buf), addr);
-      break;
+        break;
     default:
-      outb(0, 0xcf8);
+        outb(0, 0xcf8);
-      return pci_generic_block_write(d, pos, buf, len);
+        return pci_generic_block_write(d, pos, buf, len);
     }
-  outb(0, 0xcf8);
+    outb(0, 0xcf8);
-  return 1;
+    return 1;
+}
 struct pci_methods pm_intel_conf1 = {
-  "Intel-conf1",
+    "Intel-conf1",
-  NULL,                 /* config */
+    NULL,           /* config */
-  conf1_detect,
+    conf1_detect,
-  conf12_init,
+    conf12_init,
-  conf12_cleanup,
+    conf12_cleanup,
-  pci_generic_scan,
+    pci_generic_scan,
-  pci_generic_fill_info,
+    pci_generic_fill_info,
-  conf1_read,
+    conf1_read,
-  conf1_write,
+    conf1_write,
-  NULL,                 /* init_dev */
+    NULL,           /* init_dev */
-  NULL                  /* cleanup_dev */
+    NULL            /* cleanup_dev */
 };
 struct pci_methods pm_intel_conf2 = {
-  "Intel-conf2",
+    "Intel-conf2",
-  NULL,                 /* config */
+    NULL,           /* config */
-  conf2_detect,
+    conf2_detect,
-  conf12_init,
+    conf12_init,
-  conf12_cleanup,
+    conf12_cleanup,
-  pci_generic_scan,
+    pci_generic_scan,
-  pci_generic_fill_info,
+    pci_generic_fill_info,
-  conf2_read,
+    conf2_read,
-  conf2_write,
+    conf2_write,
-  NULL,                 /* init_dev */
+    NULL,           /* init_dev */
-  NULL                  /* cleanup_dev */
+    NULL            /* cleanup_dev */
 };

Subversion Repositories HelenOS-historic

(root)/uspace/trunk/pci/libpci/i386-ports.c – Rev 1301 → 1302