PCI: Make current and maximum bus speeds part of the PCI core

[pandora-kernel.git] / drivers / pci / slot.c

diff --git a/drivers/pci/slot.c b/drivers/pci/slot.c
index 8c02b6c..6f6b8d2 100644 (file)
--- a/drivers/pci/slot.c
+++ b/drivers/pci/slot.c
@@ -47,6 +47,54 @@ static ssize_t address_read_file(struct pci_slot *slot, char *buf)
                                slot->number);
 }
 
+/* these strings match up with the values in pci_bus_speed */
+static char *pci_bus_speed_strings[] = {
+       "33 MHz PCI",           /* 0x00 */
+       "66 MHz PCI",           /* 0x01 */
+       "66 MHz PCI-X",         /* 0x02 */
+       "100 MHz PCI-X",        /* 0x03 */
+       "133 MHz PCI-X",        /* 0x04 */
+       NULL,                   /* 0x05 */
+       NULL,                   /* 0x06 */
+       NULL,                   /* 0x07 */
+       NULL,                   /* 0x08 */
+       "66 MHz PCI-X 266",     /* 0x09 */
+       "100 MHz PCI-X 266",    /* 0x0a */
+       "133 MHz PCI-X 266",    /* 0x0b */
+       NULL,                   /* 0x0c */
+       NULL,                   /* 0x0d */
+       NULL,                   /* 0x0e */
+       NULL,                   /* 0x0f */
+       NULL,                   /* 0x10 */
+       "66 MHz PCI-X 533",     /* 0x11 */
+       "100 MHz PCI-X 533",    /* 0x12 */
+       "133 MHz PCI-X 533",    /* 0x13 */
+       "2.5 GT/s PCIe",        /* 0x14 */
+       "5.0 GT/s PCIe",        /* 0x15 */
+};
+
+static ssize_t bus_speed_read(enum pci_bus_speed speed, char *buf)
+{
+       const char *speed_string;
+
+       if (speed < ARRAY_SIZE(pci_bus_speed_strings))
+               speed_string = pci_bus_speed_strings[speed];
+       else
+               speed_string = "Unknown";
+
+       return sprintf(buf, "%s\n", speed_string);
+}
+
+static ssize_t max_speed_read_file(struct pci_slot *slot, char *buf)
+{
+       return bus_speed_read(slot->bus->max_bus_speed, buf);
+}
+
+static ssize_t cur_speed_read_file(struct pci_slot *slot, char *buf)
+{
+       return bus_speed_read(slot->bus->cur_bus_speed, buf);
+}
+
 static void pci_slot_release(struct kobject *kobj)
 {
        struct pci_dev *dev;
@@ -66,9 +114,15 @@ static void pci_slot_release(struct kobject *kobj)
 
 static struct pci_slot_attribute pci_slot_attr_address =
        __ATTR(address, (S_IFREG | S_IRUGO), address_read_file, NULL);
+static struct pci_slot_attribute pci_slot_attr_max_speed =
+       __ATTR(max_bus_speed, (S_IFREG | S_IRUGO), max_speed_read_file, NULL);
+static struct pci_slot_attribute pci_slot_attr_cur_speed =
+       __ATTR(cur_bus_speed, (S_IFREG | S_IRUGO), cur_speed_read_file, NULL);
 
 static struct attribute *pci_slot_default_attrs[] = {
        &pci_slot_attr_address.attr,
+       &pci_slot_attr_max_speed.attr,
+       &pci_slot_attr_cur_speed.attr,
        NULL,
 };