This patch enables PCI Domain numbering on Altix.
Signed-off-by: Colin Ngam <[EMAIL PROTECTED]>
Index: test-2.6/arch/ia64/sn/kernel/io_init.c
===================================================================
--- test-2.6.orig/arch/ia64/sn/kernel/io_init.c 2005-07-28 16:02:04.466055779
-0500
+++ test-2.6/arch/ia64/sn/kernel/io_init.c 2005-08-02 13:40:32.572471100
-0500
@@ -44,6 +44,9 @@
struct sn_pcibus_provider *sn_pci_provider[PCIIO_ASIC_MAX_TYPES]; /*
indexed by asic type */
+static int max_segment_number = 0; /* Default highest segment number */
+static int max_pcibus_number = 255; /* Default highest pci bus number */
+
/*
* Hooks and struct for unsupported pci providers
*/
@@ -157,13 +160,28 @@
uint64_t nasid;
int i, widget;
+ /*
+ * Get SGI Specific HUB chipset information.
+ * Inform Prom that this kernel can support domain bus numbering.
+ */
for (i = 0; i < numionodes; i++) {
hubdev = (struct hubdev_info *)(NODEPDA(i)->pdinfo);
nasid = cnodeid_to_nasid(i);
+ hubdev->max_segment_number = 0xffffffff;
+ hubdev->max_pcibus_number = 0xff;
status = sal_get_hubdev_info(nasid, (uint64_t) __pa(hubdev));
if (status)
continue;
+ /* Save the largest Domain and pcibus numbers found. */
+ if (hubdev->max_segment_number) {
+ /*
+ * Dealing with a Prom that supports segments.
+ */
+ max_segment_number = hubdev->max_segment_number;
+ max_pcibus_number = hubdev->max_pcibus_number;
+ }
+
/* Attach the error interrupt handlers */
if (nasid & 1)
ice_error_init(hubdev);
@@ -229,7 +247,7 @@
void sn_pci_fixup_slot(struct pci_dev *dev)
{
int idx;
- int segment = 0;
+ int segment = pci_domain_nr(dev->bus);
int status = 0;
struct pcibus_bussoft *bs;
struct pci_bus *host_pci_bus;
@@ -282,9 +300,9 @@
* PCI host_pci_dev struct and set up host bus linkages
*/
- bus_no = SN_PCIDEV_INFO(dev)->pdi_slot_host_handle >> 32;
+ bus_no = (SN_PCIDEV_INFO(dev)->pdi_slot_host_handle >> 32) & 0xff;
devfn = SN_PCIDEV_INFO(dev)->pdi_slot_host_handle & 0xffffffff;
- host_pci_bus = pci_find_bus(pci_domain_nr(dev->bus), bus_no);
+ host_pci_bus = pci_find_bus(segment, bus_no);
host_pci_dev = pci_get_slot(host_pci_bus, devfn);
SN_PCIDEV_INFO(dev)->host_pci_dev = host_pci_dev;
@@ -332,6 +350,7 @@
prom_bussoft_ptr = __va(prom_bussoft_ptr);
controller = kcalloc(1,sizeof(struct pci_controller), GFP_KERNEL);
+ controller->segment = segment;
if (!controller)
BUG();
@@ -426,6 +445,7 @@
static int __init sn_pci_init(void)
{
int i = 0;
+ int j = 0;
struct pci_dev *pci_dev = NULL;
extern void sn_init_cpei_timer(void);
#ifdef CONFIG_PROC_FS
@@ -460,8 +480,9 @@
#endif
/* busses are not known yet ... */
- for (i = 0; i < PCI_BUSES_TO_SCAN; i++)
- sn_pci_controller_fixup(0, i, NULL);
+ for (i = 0; i <= max_segment_number; i++)
+ for (j = 0; j <= max_pcibus_number; j++)
+ sn_pci_controller_fixup(i, j, NULL);
/*
* Generic Linux PCI Layer has created the pci_bus and pci_dev
Index: test-2.6/arch/ia64/sn/include/xtalk/hubdev.h
===================================================================
--- test-2.6.orig/arch/ia64/sn/include/xtalk/hubdev.h 2005-07-28
16:02:04.462149924 -0500
+++ test-2.6/arch/ia64/sn/include/xtalk/hubdev.h 2005-08-01
10:55:51.959801006 -0500
@@ -34,7 +34,8 @@
unsigned long sfdl_force_int_addr;
unsigned long sfdl_flush_value;
volatile unsigned long *sfdl_flush_addr;
- uint64_t sfdl_persistent_busnum;
+ uint32_t sfdl_persistent_busnum;
+ uint32_t sfdl_persistent_segment;
struct pcibus_info *sfdl_pcibus_info;
spinlock_t sfdl_flush_lock;
};
@@ -58,7 +59,8 @@
void *hdi_nodepda;
void *hdi_node_vertex;
- void *hdi_xtalk_vertex;
+ uint32_t max_segment_number;
+ uint32_t max_pcibus_number;
};
extern void hubdev_init_node(nodepda_t *, cnodeid_t);
Index: test-2.6/include/asm-ia64/sn/pcibus_provider_defs.h
===================================================================
--- test-2.6.orig/include/asm-ia64/sn/pcibus_provider_defs.h 2005-07-28
16:02:13.888931637 -0500
+++ test-2.6/include/asm-ia64/sn/pcibus_provider_defs.h 2005-08-01
10:55:52.071117705 -0500
@@ -30,7 +30,8 @@
struct pcibus_bussoft {
uint32_t bs_asic_type; /* chipset type */
uint32_t bs_xid; /* xwidget id */
- uint64_t bs_persist_busnum; /* Persistent Bus Number */
+ uint32_t bs_persist_busnum; /* Persistent Bus Number */
+ uint32_t bs_persist_segment; /* Segment Number */
uint64_t bs_legacy_io; /* legacy io pio addr */
uint64_t bs_legacy_mem; /* legacy mem pio addr */
uint64_t bs_base; /* widget base */
Index: test-2.6/arch/ia64/sn/pci/pcibr/pcibr_provider.c
===================================================================
--- test-2.6.orig/arch/ia64/sn/pci/pcibr/pcibr_provider.c 2005-07-28
16:02:04.523667144 -0500
+++ test-2.6/arch/ia64/sn/pci/pcibr/pcibr_provider.c 2005-08-01
10:55:52.198057801 -0500
@@ -60,7 +60,7 @@
ret_stuff.status = 0;
ret_stuff.v0 = 0;
- segment = 0;
+ segment = soft->pbi_buscommon.bs_persist_segment;
busnum = soft->pbi_buscommon.bs_persist_busnum;
SAL_CALL_NOLOCK(ret_stuff,
(u64) SN_SAL_IOIF_ERROR_INTERRUPT,
@@ -142,9 +142,12 @@
j++, sn_flush_device_list++) {
if (sn_flush_device_list->sfdl_slot == -1)
continue;
- if (sn_flush_device_list->
- sfdl_persistent_busnum ==
- soft->pbi_buscommon.bs_persist_busnum)
+ if ((sn_flush_device_list->
+ sfdl_persistent_segment ==
+ soft->pbi_buscommon.bs_persist_segment) &&
+ (sn_flush_device_list->
+ sfdl_persistent_busnum ==
+ soft->pbi_buscommon.bs_persist_busnum))
sn_flush_device_list->sfdl_pcibus_info =
soft;
}
Index: test-2.6/arch/ia64/sn/pci/tioca_provider.c
===================================================================
--- test-2.6.orig/arch/ia64/sn/pci/tioca_provider.c 2005-07-28
16:02:04.524643608 -0500
+++ test-2.6/arch/ia64/sn/pci/tioca_provider.c 2005-08-01 15:54:37.849344268
-0500
@@ -559,7 +559,7 @@
ret_stuff.status = 0;
ret_stuff.v0 = 0;
- segment = 0;
+ segment = soft->ca_common.bs_persist_segment;
busnum = soft->ca_common.bs_persist_busnum;
SAL_CALL_NOLOCK(ret_stuff,
@@ -622,7 +622,8 @@
nasid_to_cnodeid(tioca_common->ca_closest_nasid);
tioca_common->ca_kernel_private = (uint64_t) tioca_kern;
- bus = pci_find_bus(0, tioca_common->ca_common.bs_persist_busnum);
+ bus = pci_find_bus(tioca_common->ca_common.bs_persist_segment,
+ tioca_common->ca_common.bs_persist_busnum);
BUG_ON(!bus);
tioca_kern->ca_devices = &bus->devices;
-
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