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Altix: ACPI SSDT PCI device support

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Add SN platform support for running with an ACPI
capable PROM that defines PCI devices in SSDT
tables. There is a SSDT table for every occupied
slot on a root bus, containing info for every
PPB and/or device on the bus. The SSDTs will be
dynamically loaded/unloaded at hotplug enable/disable.

Platform specific information that is currently
passed via a SAL call, will now be passed via the
Vendor resource in the ACPI Device object(s) defined
in each SSDT.

Signed-off-by: John Keller <jpk@sgi.com>
Cc: Greg KH <greg@kroah.com>
Cc: "Luck, Tony" <tony.luck@intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
John Keller
2007-01-30 01:17:37 -05:00
committed by Len Brown
parent 647fb47dfa
commit 6f09a9250a
7 changed files with 373 additions and 109 deletions
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91
arch/ia64/sn/kernel/io_common.c
View File

@@ -26,14 +26,10 @@
#include <linux/acpi.h>
#include <asm/sn/sn2/sn_hwperf.h>
#include <asm/sn/acpi.h>
#include "acpi/acglobal.h"
extern void sn_init_cpei_timer(void);
extern void register_sn_procfs(void);
extern void sn_acpi_bus_fixup(struct pci_bus *);
extern void sn_bus_fixup(struct pci_bus *);
extern void sn_acpi_slot_fixup(struct pci_dev *, struct pcidev_info *);
extern void sn_more_slot_fixup(struct pci_dev *, struct pcidev_info *);
extern void sn_legacy_pci_window_fixup(struct pci_controller *, u64, u64);
extern void sn_io_acpi_init(void);
extern void sn_io_init(void);
@@ -48,16 +44,10 @@ struct sysdata_el {
int sn_ioif_inited; /* SN I/O infrastructure initialized? */
struct sn_pcibus_provider *sn_pci_provider[PCIIO_ASIC_MAX_TYPES]; /* indexed by asic type */
int sn_acpi_rev; /* SN ACPI revision */
EXPORT_SYMBOL_GPL(sn_acpi_rev);
int sn_acpi_base_support(void)
{
struct acpi_table_header *header;
(void)acpi_get_table_by_index(ACPI_TABLE_INDEX_DSDT, &header);
if (header && header->oem_revision >= 0x20101)
return 1;
return 0;
}
struct sn_pcibus_provider *sn_pci_provider[PCIIO_ASIC_MAX_TYPES]; /* indexed by asic type */
/*
* Hooks and struct for unsupported pci providers
@@ -107,25 +97,6 @@ sal_get_device_dmaflush_list(u64 nasid, u64 widget_num, u64 device_num,
return ret_stuff.status;
}
/*
* Retrieve the pci device information given the bus and device|function number.
*/
static inline u64
sal_get_pcidev_info(u64 segment, u64 bus_number, u64 devfn, u64 pci_dev,
u64 sn_irq_info)
{
struct ia64_sal_retval ret_stuff;
ret_stuff.status = 0;
ret_stuff.v0 = 0;
SAL_CALL_NOLOCK(ret_stuff,
(u64) SN_SAL_IOIF_GET_PCIDEV_INFO,
(u64) segment, (u64) bus_number, (u64) devfn,
(u64) pci_dev,
sn_irq_info, 0, 0);
return ret_stuff.v0;
}
/*
* sn_pcidev_info_get() - Retrieve the pcidev_info struct for the specified
* device.
@@ -258,50 +229,25 @@ void sn_pci_unfixup_slot(struct pci_dev *dev)
}
/*
* sn_pci_fixup_slot() - This routine sets up a slot's resources consistent
* with the Linux PCI abstraction layer. Resources
* acquired from our PCI provider include PIO maps
* to BAR space and interrupt objects.
* sn_pci_fixup_slot()
*/
void sn_pci_fixup_slot(struct pci_dev *dev)
void sn_pci_fixup_slot(struct pci_dev *dev, struct pcidev_info *pcidev_info,
struct sn_irq_info *sn_irq_info)
{
int segment = pci_domain_nr(dev->bus);
int status = 0;
struct pcibus_bussoft *bs;
struct pci_bus *host_pci_bus;
struct pci_dev *host_pci_dev;
struct pcidev_info *pcidev_info;
struct sn_irq_info *sn_irq_info;
unsigned int bus_no, devfn;
struct pci_bus *host_pci_bus;
struct pci_dev *host_pci_dev;
unsigned int bus_no, devfn;
pci_dev_get(dev); /* for the sysdata pointer */
pcidev_info = kzalloc(sizeof(struct pcidev_info), GFP_KERNEL);
if (!pcidev_info)
BUG(); /* Cannot afford to run out of memory */
sn_irq_info = kzalloc(sizeof(struct sn_irq_info), GFP_KERNEL);
if (!sn_irq_info)
BUG(); /* Cannot afford to run out of memory */
/* Call to retrieve pci device information needed by kernel. */
status = sal_get_pcidev_info((u64) segment, (u64) dev->bus->number,
dev->devfn,
(u64) __pa(pcidev_info),
(u64) __pa(sn_irq_info));
if (status)
BUG(); /* Cannot get platform pci device information */
/* Add pcidev_info to list in pci_controller.platform_data */
list_add_tail(&pcidev_info->pdi_list,
&(SN_PLATFORM_DATA(dev->bus)->pcidev_info));
if (SN_ACPI_BASE_SUPPORT())
sn_acpi_slot_fixup(dev, pcidev_info);
else
sn_more_slot_fixup(dev, pcidev_info);
/*
* Using the PROMs values for the PCI host bus, get the Linux
* PCI host_pci_dev struct and set up host bus linkages
* PCI host_pci_dev struct and set up host bus linkages
*/
bus_no = (pcidev_info->pdi_slot_host_handle >> 32) & 0xff;
@@ -498,11 +444,6 @@ void sn_generate_path(struct pci_bus *pci_bus, char *address)
sprintf(address, "%s^%d", address, geo_slot(geoid));
}
/*
* sn_pci_fixup_bus() - Perform SN specific setup of software structs
* (pcibus_bussoft, pcidev_info) and hardware
* registers, for the specified bus and devices under it.
*/
void __devinit
sn_pci_fixup_bus(struct pci_bus *bus)
{
@@ -528,6 +469,15 @@ sn_io_early_init(void)
if (!ia64_platform_is("sn2") || IS_RUNNING_ON_FAKE_PROM())
return 0;
/* we set the acpi revision to that of the DSDT table OEM rev. */
{
struct acpi_table_header *header = NULL;
acpi_get_table_by_index(ACPI_TABLE_INDEX_DSDT, &header);
BUG_ON(header == NULL);
sn_acpi_rev = header->oem_revision;
}
/*
* prime sn_pci_provider[]. Individial provider init routines will
* override their respective default entries.
@@ -618,7 +568,6 @@ sn_io_late_init(void)
fs_initcall(sn_io_late_init);
EXPORT_SYMBOL(sn_pci_fixup_slot);
EXPORT_SYMBOL(sn_pci_unfixup_slot);
EXPORT_SYMBOL(sn_bus_store_sysdata);
EXPORT_SYMBOL(sn_bus_free_sysdata);