[PATCH] PCI Hotplug: Tollhouse HP: SGI hotplug driver changes

SGI hotplug driver changes required to support Tollhouse system PCI
hotplug, and implements the PRF_HOTPLUG_SUPPORT feature bit.

Signed-off-by: Prarit Bhargava <prarit@sgi.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/pci/hotplug/sgi_hotplug.c b/drivers/pci/hotplug/sgi_hotplug.c
index 8cb9abd..cfee9db 100644 (file)
--- a/drivers/pci/hotplug/sgi_hotplug.c
+++ b/drivers/pci/hotplug/sgi_hotplug.c
@@ -18,11 +18,13 @@
 #include <linux/mutex.h>
 
 #include <asm/sn/addrs.h>
+#include <asm/sn/geo.h>
 #include <asm/sn/l1.h>
 #include <asm/sn/module.h>
 #include <asm/sn/pcibr_provider.h>
 #include <asm/sn/pcibus_provider_defs.h>
 #include <asm/sn/pcidev.h>
+#include <asm/sn/sn_feature_sets.h>
 #include <asm/sn/sn_sal.h>
 #include <asm/sn/types.h>
 
@@ -102,8 +104,7 @@ static struct hotplug_slot_attribute sn_slot_path_attr = __ATTR_RO(path);
 static int sn_pci_slot_valid(struct pci_bus *pci_bus, int device)
 {
        struct pcibus_info *pcibus_info;
-       int bricktype;
-       int bus_num;
+       u16 busnum, segment, ioboard_type;
 
        pcibus_info = SN_PCIBUS_BUSSOFT_INFO(pci_bus);
 
@@ -111,12 +112,14 @@ static int sn_pci_slot_valid(struct pci_bus *pci_bus, int device)
        if (!(pcibus_info->pbi_valid_devices & (1 << device)))
                return -EPERM;
 
-       bricktype = MODULE_GET_BTYPE(pcibus_info->pbi_moduleid);
-       bus_num = pcibus_info->pbi_buscommon.bs_persist_busnum & 0xf;
+       ioboard_type = sn_ioboard_to_pci_bus(pci_bus);
+       busnum = pcibus_info->pbi_buscommon.bs_persist_busnum;
+       segment = pci_domain_nr(pci_bus) & 0xf;
 
        /* Do not allow hotplug operations on base I/O cards */
-       if ((bricktype == L1_BRICKTYPE_IX ||  bricktype == L1_BRICKTYPE_IA) &&
-           (bus_num == 1 && device != 1))
+       if ((ioboard_type == L1_BRICKTYPE_IX ||
+            ioboard_type == L1_BRICKTYPE_IA) &&
+           (segment == 1 && busnum == 0 && device != 1))
                return -EPERM;
 
        return 1;
@@ -125,23 +128,23 @@ static int sn_pci_slot_valid(struct pci_bus *pci_bus, int device)
 static int sn_pci_bus_valid(struct pci_bus *pci_bus)
 {
        struct pcibus_info *pcibus_info;
-       int asic_type;
-       int bricktype;
-
-       pcibus_info = SN_PCIBUS_BUSSOFT_INFO(pci_bus);
+       u32 asic_type;
+       u16 ioboard_type;
 
        /* Don't register slots hanging off the TIOCA bus */
+       pcibus_info = SN_PCIBUS_BUSSOFT_INFO(pci_bus);
        asic_type = pcibus_info->pbi_buscommon.bs_asic_type;
        if (asic_type == PCIIO_ASIC_TYPE_TIOCA)
                return -EPERM;
 
        /* Only register slots in I/O Bricks that support hotplug */
-       bricktype = MODULE_GET_BTYPE(pcibus_info->pbi_moduleid);
-       switch (bricktype) {
+       ioboard_type = sn_ioboard_to_pci_bus(pci_bus);
+       switch (ioboard_type) {
                case L1_BRICKTYPE_IX:
                case L1_BRICKTYPE_PX:
                case L1_BRICKTYPE_IA:
                case L1_BRICKTYPE_PA:
+               case L1_BOARDTYPE_PCIX3SLOT:
                        return 1;
                        break;
                default:
@@ -175,14 +178,11 @@ static int sn_hp_slot_private_alloc(struct hotplug_slot *bss_hotplug_slot,
        slot->pci_bus = pci_bus;
        sprintf(bss_hotplug_slot->name, "%04x:%02x:%02x",
                pci_domain_nr(pci_bus),
-               ((int)pcibus_info->pbi_buscommon.bs_persist_busnum) & 0xf,
+               ((u16)pcibus_info->pbi_buscommon.bs_persist_busnum),
                device + 1);
-       sprintf(slot->physical_path, "module_%c%c%c%c%.2d",
-               '0'+RACK_GET_CLASS(MODULE_GET_RACK(pcibus_info->pbi_moduleid)),
-               '0'+RACK_GET_GROUP(MODULE_GET_RACK(pcibus_info->pbi_moduleid)),
-               '0'+RACK_GET_NUM(MODULE_GET_RACK(pcibus_info->pbi_moduleid)),
-               MODULE_GET_BTCHAR(pcibus_info->pbi_moduleid),
-               MODULE_GET_BPOS(pcibus_info->pbi_moduleid));
+
+       sn_generate_path(pci_bus, slot->physical_path);
+
        slot->hotplug_slot = bss_hotplug_slot;
        list_add(&slot->hp_list, &sn_hp_list);
 
@@ -553,8 +553,8 @@ static int sn_pci_hotplug_init(void)
        int rc;
        int registered = 0;
 
-       if (sn_sal_rev() < SGI_HOTPLUG_PROM_REV) {
-               printk(KERN_ERR "%s: PROM version must be greater than 4.30\n",
+       if (!sn_prom_feature_available(PRF_HOTPLUG_SUPPORT)) {
+               printk(KERN_ERR "%s: PROM version does not support hotplug.\n",
                       __FUNCTION__);
                return -EPERM;
        }