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

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Move the max_bus_speed and cur_bus_speed into the pci_bus.  Expose the
values through the PCI slot driver instead of the hotplug slot driver.
Update all the hotplug drivers to use the pci_bus instead of their own
data structures.

Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
This commit is contained in:
Matthew Wilcox 2009-12-13 08:11:32 -05:00 • committed by Jesse Barnes
commit 3749c51ac6
17 changed files with 246 additions and 498 deletions
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106
drivers/pci/hotplug/ibmphp_core.c
View file

@ -395,89 +395,40 @@ static int get_adapter_present(struct hotplug_slot *hotplug_slot, u8 * value)
return rc;
}
static int get_max_bus_speed(struct hotplug_slot *hotplug_slot, enum pci_bus_speed *value)
static int get_max_bus_speed(struct slot *slot)
{
int rc = -ENODEV;
struct slot *pslot;
int rc;
u8 mode = 0;
enum pci_bus_speed speed;
struct pci_bus *bus = slot->hotplug_slot->pci_slot->bus;
debug("%s - Entry hotplug_slot[%p] pvalue[%p]\n", __func__,
hotplug_slot, value);
debug("%s - Entry slot[%p]\n", __func__, slot);
ibmphp_lock_operations();
mode = slot->supported_bus_mode;
speed = slot->supported_speed;
ibmphp_unlock_operations();
if (hotplug_slot) {
pslot = hotplug_slot->private;
if (pslot) {
rc = 0;
mode = pslot->supported_bus_mode;
*value = pslot->supported_speed;
switch (*value) {
case BUS_SPEED_33:
break;
case BUS_SPEED_66:
if (mode == BUS_MODE_PCIX)
*value += 0x01;
break;
case BUS_SPEED_100:
case BUS_SPEED_133:
*value = pslot->supported_speed + 0x01;
break;
default:
/* Note (will need to change): there would be soon 256, 512 also */
rc = -ENODEV;
}
}
switch (speed) {
case BUS_SPEED_33:
break;
case BUS_SPEED_66:
if (mode == BUS_MODE_PCIX)
speed += 0x01;
break;
case BUS_SPEED_100:
case BUS_SPEED_133:
speed += 0x01;
break;
default:
/* Note (will need to change): there would be soon 256, 512 also */
rc = -ENODEV;
}
ibmphp_unlock_operations();
debug("%s - Exit rc[%d] value[%x]\n", __func__, rc, *value);
return rc;
}
if (!rc)
bus->max_bus_speed = speed;
static int get_cur_bus_speed(struct hotplug_slot *hotplug_slot, enum pci_bus_speed *value)
{
int rc = -ENODEV;
struct slot *pslot;
u8 mode = 0;
debug("%s - Entry hotplug_slot[%p] pvalue[%p]\n", __func__,
hotplug_slot, value);
ibmphp_lock_operations();
if (hotplug_slot) {
pslot = hotplug_slot->private;
if (pslot) {
rc = get_cur_bus_info(&pslot);
if (!rc) {
mode = pslot->bus_on->current_bus_mode;
*value = pslot->bus_on->current_speed;
switch (*value) {
case BUS_SPEED_33:
break;
case BUS_SPEED_66:
if (mode == BUS_MODE_PCIX)
*value += 0x01;
else if (mode == BUS_MODE_PCI)
;
else
*value = PCI_SPEED_UNKNOWN;
break;
case BUS_SPEED_100:
case BUS_SPEED_133:
*value += 0x01;
break;
default:
/* Note of change: there would also be 256, 512 soon */
rc = -ENODEV;
}
}
}
}
ibmphp_unlock_operations();
debug("%s - Exit rc[%d] value[%x]\n", __func__, rc, *value);
debug("%s - Exit rc[%d] speed[%x]\n", __func__, rc, speed);
return rc;
}
@ -572,6 +523,7 @@ static int __init init_ops(void)
if (slot_cur->bus_on->current_speed == 0xFF)
if (get_cur_bus_info(&slot_cur))
return -1;
get_max_bus_speed(slot_cur);
if (slot_cur->ctrl->options == 0xFF)
if (get_hpc_options(slot_cur, &slot_cur->ctrl->options))
@ -655,6 +607,7 @@ static int validate(struct slot *slot_cur, int opn)
int ibmphp_update_slot_info(struct slot *slot_cur)
{
struct hotplug_slot_info *info;
struct pci_bus *bus = slot_cur->hotplug_slot->pci_slot->bus;
int rc;
u8 bus_speed;
u8 mode;
@ -700,8 +653,7 @@ int ibmphp_update_slot_info(struct slot *slot_cur)
bus_speed = PCI_SPEED_UNKNOWN;
}
info->cur_bus_speed = bus_speed;
info->max_bus_speed = slot_cur->hotplug_slot->info->max_bus_speed;
bus->cur_bus_speed = bus_speed;
// To do: bus_names
rc = pci_hp_change_slot_info(slot_cur->hotplug_slot, info);
@ -1326,8 +1278,6 @@ struct hotplug_slot_ops ibmphp_hotplug_slot_ops = {
.get_attention_status = get_attention_status,
.get_latch_status = get_latch_status,
.get_adapter_status = get_adapter_present,
.get_max_bus_speed = get_max_bus_speed,
.get_cur_bus_speed = get_cur_bus_speed,
/* .get_max_adapter_speed = get_max_adapter_speed,
.get_bus_name_status = get_bus_name,
*/