Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
This commit is contained in:
Linus Torvalds
411
arch/ia64/sn/kernel/io_init.c
Normal file
411
arch/ia64/sn/kernel/io_init.c
Normal file
@@ -0,0 +1,411 @@
|
||||
/*
|
||||
* This file is subject to the terms and conditions of the GNU General Public
|
||||
* License. See the file "COPYING" in the main directory of this archive
|
||||
* for more details.
|
||||
*
|
||||
* Copyright (C) 1992 - 1997, 2000-2004 Silicon Graphics, Inc. All rights reserved.
|
||||
*/
|
||||
|
||||
#include <linux/bootmem.h>
|
||||
#include <linux/nodemask.h>
|
||||
#include <asm/sn/types.h>
|
||||
#include <asm/sn/sn_sal.h>
|
||||
#include <asm/sn/addrs.h>
|
||||
#include "pci/pcibus_provider_defs.h"
|
||||
#include "pci/pcidev.h"
|
||||
#include "pci/pcibr_provider.h"
|
||||
#include "xtalk/xwidgetdev.h"
|
||||
#include <asm/sn/geo.h>
|
||||
#include "xtalk/hubdev.h"
|
||||
#include <asm/sn/io.h>
|
||||
#include <asm/sn/simulator.h>
|
||||
|
||||
char master_baseio_wid;
|
||||
nasid_t master_nasid = INVALID_NASID; /* Partition Master */
|
||||
|
||||
struct slab_info {
|
||||
struct hubdev_info hubdev;
|
||||
};
|
||||
|
||||
struct brick {
|
||||
moduleid_t id; /* Module ID of this module */
|
||||
struct slab_info slab_info[MAX_SLABS + 1];
|
||||
};
|
||||
|
||||
int sn_ioif_inited = 0; /* SN I/O infrastructure initialized? */
|
||||
|
||||
/*
|
||||
* Retrieve the DMA Flush List given nasid. This list is needed
|
||||
* to implement the WAR - Flush DMA data on PIO Reads.
|
||||
*/
|
||||
static inline uint64_t
|
||||
sal_get_widget_dmaflush_list(u64 nasid, u64 widget_num, u64 address)
|
||||
{
|
||||
|
||||
struct ia64_sal_retval ret_stuff;
|
||||
ret_stuff.status = 0;
|
||||
ret_stuff.v0 = 0;
|
||||
|
||||
SAL_CALL_NOLOCK(ret_stuff,
|
||||
(u64) SN_SAL_IOIF_GET_WIDGET_DMAFLUSH_LIST,
|
||||
(u64) nasid, (u64) widget_num, (u64) address, 0, 0, 0,
|
||||
0);
|
||||
return ret_stuff.v0;
|
||||
|
||||
}
|
||||
|
||||
/*
|
||||
* Retrieve the hub device info structure for the given nasid.
|
||||
*/
|
||||
static inline uint64_t sal_get_hubdev_info(u64 handle, u64 address)
|
||||
{
|
||||
|
||||
struct ia64_sal_retval ret_stuff;
|
||||
ret_stuff.status = 0;
|
||||
ret_stuff.v0 = 0;
|
||||
|
||||
SAL_CALL_NOLOCK(ret_stuff,
|
||||
(u64) SN_SAL_IOIF_GET_HUBDEV_INFO,
|
||||
(u64) handle, (u64) address, 0, 0, 0, 0, 0);
|
||||
return ret_stuff.v0;
|
||||
}
|
||||
|
||||
/*
|
||||
* Retrieve the pci bus information given the bus number.
|
||||
*/
|
||||
static inline uint64_t sal_get_pcibus_info(u64 segment, u64 busnum, u64 address)
|
||||
{
|
||||
|
||||
struct ia64_sal_retval ret_stuff;
|
||||
ret_stuff.status = 0;
|
||||
ret_stuff.v0 = 0;
|
||||
|
||||
SAL_CALL_NOLOCK(ret_stuff,
|
||||
(u64) SN_SAL_IOIF_GET_PCIBUS_INFO,
|
||||
(u64) segment, (u64) busnum, (u64) address, 0, 0, 0, 0);
|
||||
return ret_stuff.v0;
|
||||
}
|
||||
|
||||
/*
|
||||
* Retrieve the pci device information given the bus and device|function number.
|
||||
*/
|
||||
static inline uint64_t
|
||||
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_alloc_pci_sysdata() - This routine allocates a pci controller
|
||||
* which is expected as the pci_dev and pci_bus sysdata by the Linux
|
||||
* PCI infrastructure.
|
||||
*/
|
||||
static inline struct pci_controller *sn_alloc_pci_sysdata(void)
|
||||
{
|
||||
struct pci_controller *pci_sysdata;
|
||||
|
||||
pci_sysdata = kmalloc(sizeof(*pci_sysdata), GFP_KERNEL);
|
||||
if (!pci_sysdata)
|
||||
BUG();
|
||||
|
||||
memset(pci_sysdata, 0, sizeof(*pci_sysdata));
|
||||
return pci_sysdata;
|
||||
}
|
||||
|
||||
/*
|
||||
* sn_fixup_ionodes() - This routine initializes the HUB data strcuture for
|
||||
* each node in the system.
|
||||
*/
|
||||
static void sn_fixup_ionodes(void)
|
||||
{
|
||||
|
||||
struct sn_flush_device_list *sn_flush_device_list;
|
||||
struct hubdev_info *hubdev;
|
||||
uint64_t status;
|
||||
uint64_t nasid;
|
||||
int i, widget;
|
||||
|
||||
for (i = 0; i < numionodes; i++) {
|
||||
hubdev = (struct hubdev_info *)(NODEPDA(i)->pdinfo);
|
||||
nasid = cnodeid_to_nasid(i);
|
||||
status = sal_get_hubdev_info(nasid, (uint64_t) __pa(hubdev));
|
||||
if (status)
|
||||
continue;
|
||||
|
||||
for (widget = 0; widget <= HUB_WIDGET_ID_MAX; widget++)
|
||||
hubdev->hdi_xwidget_info[widget].xwi_hubinfo = hubdev;
|
||||
|
||||
if (!hubdev->hdi_flush_nasid_list.widget_p)
|
||||
continue;
|
||||
|
||||
hubdev->hdi_flush_nasid_list.widget_p =
|
||||
kmalloc((HUB_WIDGET_ID_MAX + 1) *
|
||||
sizeof(struct sn_flush_device_list *), GFP_KERNEL);
|
||||
|
||||
memset(hubdev->hdi_flush_nasid_list.widget_p, 0x0,
|
||||
(HUB_WIDGET_ID_MAX + 1) *
|
||||
sizeof(struct sn_flush_device_list *));
|
||||
|
||||
for (widget = 0; widget <= HUB_WIDGET_ID_MAX; widget++) {
|
||||
sn_flush_device_list = kmalloc(DEV_PER_WIDGET *
|
||||
sizeof(struct
|
||||
sn_flush_device_list),
|
||||
GFP_KERNEL);
|
||||
memset(sn_flush_device_list, 0x0,
|
||||
DEV_PER_WIDGET *
|
||||
sizeof(struct sn_flush_device_list));
|
||||
|
||||
status =
|
||||
sal_get_widget_dmaflush_list(nasid, widget,
|
||||
(uint64_t)
|
||||
__pa
|
||||
(sn_flush_device_list));
|
||||
if (status) {
|
||||
kfree(sn_flush_device_list);
|
||||
continue;
|
||||
}
|
||||
|
||||
hubdev->hdi_flush_nasid_list.widget_p[widget] =
|
||||
sn_flush_device_list;
|
||||
}
|
||||
|
||||
if (!(i & 1))
|
||||
hub_error_init(hubdev);
|
||||
else
|
||||
ice_error_init(hubdev);
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
/*
|
||||
* 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.
|
||||
*/
|
||||
static void sn_pci_fixup_slot(struct pci_dev *dev)
|
||||
{
|
||||
int idx;
|
||||
int segment = 0;
|
||||
uint64_t size;
|
||||
struct sn_irq_info *sn_irq_info;
|
||||
struct pci_dev *host_pci_dev;
|
||||
int status = 0;
|
||||
|
||||
dev->sysdata = kmalloc(sizeof(struct pcidev_info), GFP_KERNEL);
|
||||
if (SN_PCIDEV_INFO(dev) <= 0)
|
||||
BUG(); /* Cannot afford to run out of memory */
|
||||
memset(SN_PCIDEV_INFO(dev), 0, sizeof(struct pcidev_info));
|
||||
|
||||
sn_irq_info = kmalloc(sizeof(struct sn_irq_info), GFP_KERNEL);
|
||||
if (sn_irq_info <= 0)
|
||||
BUG(); /* Cannot afford to run out of memory */
|
||||
memset(sn_irq_info, 0, sizeof(struct sn_irq_info));
|
||||
|
||||
/* Call to retrieve pci device information needed by kernel. */
|
||||
status = sal_get_pcidev_info((u64) segment, (u64) dev->bus->number,
|
||||
dev->devfn,
|
||||
(u64) __pa(SN_PCIDEV_INFO(dev)),
|
||||
(u64) __pa(sn_irq_info));
|
||||
if (status)
|
||||
BUG(); /* Cannot get platform pci device information information */
|
||||
|
||||
/* Copy over PIO Mapped Addresses */
|
||||
for (idx = 0; idx <= PCI_ROM_RESOURCE; idx++) {
|
||||
unsigned long start, end, addr;
|
||||
|
||||
if (!SN_PCIDEV_INFO(dev)->pdi_pio_mapped_addr[idx])
|
||||
continue;
|
||||
|
||||
start = dev->resource[idx].start;
|
||||
end = dev->resource[idx].end;
|
||||
size = end - start;
|
||||
addr = SN_PCIDEV_INFO(dev)->pdi_pio_mapped_addr[idx];
|
||||
addr = ((addr << 4) >> 4) | __IA64_UNCACHED_OFFSET;
|
||||
dev->resource[idx].start = addr;
|
||||
dev->resource[idx].end = addr + size;
|
||||
if (dev->resource[idx].flags & IORESOURCE_IO)
|
||||
dev->resource[idx].parent = &ioport_resource;
|
||||
else
|
||||
dev->resource[idx].parent = &iomem_resource;
|
||||
}
|
||||
|
||||
/* set up host bus linkages */
|
||||
host_pci_dev =
|
||||
pci_find_slot(SN_PCIDEV_INFO(dev)->pdi_slot_host_handle >> 32,
|
||||
SN_PCIDEV_INFO(dev)->
|
||||
pdi_slot_host_handle & 0xffffffff);
|
||||
SN_PCIDEV_INFO(dev)->pdi_host_pcidev_info =
|
||||
SN_PCIDEV_INFO(host_pci_dev);
|
||||
SN_PCIDEV_INFO(dev)->pdi_linux_pcidev = dev;
|
||||
SN_PCIDEV_INFO(dev)->pdi_pcibus_info = SN_PCIBUS_BUSSOFT(dev->bus);
|
||||
|
||||
/* Only set up IRQ stuff if this device has a host bus context */
|
||||
if (SN_PCIDEV_BUSSOFT(dev) && sn_irq_info->irq_irq) {
|
||||
SN_PCIDEV_INFO(dev)->pdi_sn_irq_info = sn_irq_info;
|
||||
dev->irq = SN_PCIDEV_INFO(dev)->pdi_sn_irq_info->irq_irq;
|
||||
sn_irq_fixup(dev, sn_irq_info);
|
||||
}
|
||||
}
|
||||
|
||||
/*
|
||||
* sn_pci_controller_fixup() - This routine sets up a bus's resources
|
||||
* consistent with the Linux PCI abstraction layer.
|
||||
*/
|
||||
static void sn_pci_controller_fixup(int segment, int busnum)
|
||||
{
|
||||
int status = 0;
|
||||
int nasid, cnode;
|
||||
struct pci_bus *bus;
|
||||
struct pci_controller *controller;
|
||||
struct pcibus_bussoft *prom_bussoft_ptr;
|
||||
struct hubdev_info *hubdev_info;
|
||||
void *provider_soft;
|
||||
|
||||
status =
|
||||
sal_get_pcibus_info((u64) segment, (u64) busnum,
|
||||
(u64) ia64_tpa(&prom_bussoft_ptr));
|
||||
if (status > 0) {
|
||||
return; /* bus # does not exist */
|
||||
}
|
||||
|
||||
prom_bussoft_ptr = __va(prom_bussoft_ptr);
|
||||
controller = sn_alloc_pci_sysdata();
|
||||
/* controller non-zero is BUG'd in sn_alloc_pci_sysdata */
|
||||
|
||||
bus = pci_scan_bus(busnum, &pci_root_ops, controller);
|
||||
if (bus == NULL) {
|
||||
return; /* error, or bus already scanned */
|
||||
}
|
||||
|
||||
/*
|
||||
* Per-provider fixup. Copies the contents from prom to local
|
||||
* area and links SN_PCIBUS_BUSSOFT().
|
||||
*
|
||||
* Note: Provider is responsible for ensuring that prom_bussoft_ptr
|
||||
* represents an asic-type that it can handle.
|
||||
*/
|
||||
|
||||
if (prom_bussoft_ptr->bs_asic_type == PCIIO_ASIC_TYPE_PPB) {
|
||||
return; /* no further fixup necessary */
|
||||
}
|
||||
|
||||
provider_soft = pcibr_bus_fixup(prom_bussoft_ptr);
|
||||
if (provider_soft == NULL) {
|
||||
return; /* fixup failed or not applicable */
|
||||
}
|
||||
|
||||
/*
|
||||
* Generic bus fixup goes here. Don't reference prom_bussoft_ptr
|
||||
* after this point.
|
||||
*/
|
||||
|
||||
bus->sysdata = controller;
|
||||
PCI_CONTROLLER(bus)->platform_data = provider_soft;
|
||||
|
||||
nasid = NASID_GET(SN_PCIBUS_BUSSOFT(bus)->bs_base);
|
||||
cnode = nasid_to_cnodeid(nasid);
|
||||
hubdev_info = (struct hubdev_info *)(NODEPDA(cnode)->pdinfo);
|
||||
SN_PCIBUS_BUSSOFT(bus)->bs_xwidget_info =
|
||||
&(hubdev_info->hdi_xwidget_info[SN_PCIBUS_BUSSOFT(bus)->bs_xid]);
|
||||
}
|
||||
|
||||
/*
|
||||
* Ugly hack to get PCI setup until we have a proper ACPI namespace.
|
||||
*/
|
||||
|
||||
#define PCI_BUSES_TO_SCAN 256
|
||||
|
||||
static int __init sn_pci_init(void)
|
||||
{
|
||||
int i = 0;
|
||||
struct pci_dev *pci_dev = NULL;
|
||||
extern void sn_init_cpei_timer(void);
|
||||
#ifdef CONFIG_PROC_FS
|
||||
extern void register_sn_procfs(void);
|
||||
#endif
|
||||
|
||||
if (!ia64_platform_is("sn2") || IS_RUNNING_ON_SIMULATOR())
|
||||
return 0;
|
||||
|
||||
/*
|
||||
* This is needed to avoid bounce limit checks in the blk layer
|
||||
*/
|
||||
ia64_max_iommu_merge_mask = ~PAGE_MASK;
|
||||
sn_fixup_ionodes();
|
||||
sn_irq = kmalloc(sizeof(struct sn_irq_info *) * NR_IRQS, GFP_KERNEL);
|
||||
if (sn_irq <= 0)
|
||||
BUG(); /* Canno afford to run out of memory. */
|
||||
memset(sn_irq, 0, sizeof(struct sn_irq_info *) * NR_IRQS);
|
||||
|
||||
sn_init_cpei_timer();
|
||||
|
||||
#ifdef CONFIG_PROC_FS
|
||||
register_sn_procfs();
|
||||
#endif
|
||||
|
||||
for (i = 0; i < PCI_BUSES_TO_SCAN; i++) {
|
||||
sn_pci_controller_fixup(0, i);
|
||||
}
|
||||
|
||||
/*
|
||||
* Generic Linux PCI Layer has created the pci_bus and pci_dev
|
||||
* structures - time for us to add our SN PLatform specific
|
||||
* information.
|
||||
*/
|
||||
|
||||
while ((pci_dev =
|
||||
pci_find_device(PCI_ANY_ID, PCI_ANY_ID, pci_dev)) != NULL) {
|
||||
sn_pci_fixup_slot(pci_dev);
|
||||
}
|
||||
|
||||
sn_ioif_inited = 1; /* sn I/O infrastructure now initialized */
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/*
|
||||
* hubdev_init_node() - Creates the HUB data structure and link them to it's
|
||||
* own NODE specific data area.
|
||||
*/
|
||||
void hubdev_init_node(nodepda_t * npda, cnodeid_t node)
|
||||
{
|
||||
|
||||
struct hubdev_info *hubdev_info;
|
||||
|
||||
if (node >= num_online_nodes()) /* Headless/memless IO nodes */
|
||||
hubdev_info =
|
||||
(struct hubdev_info *)alloc_bootmem_node(NODE_DATA(0),
|
||||
sizeof(struct
|
||||
hubdev_info));
|
||||
else
|
||||
hubdev_info =
|
||||
(struct hubdev_info *)alloc_bootmem_node(NODE_DATA(node),
|
||||
sizeof(struct
|
||||
hubdev_info));
|
||||
npda->pdinfo = (void *)hubdev_info;
|
||||
|
||||
}
|
||||
|
||||
geoid_t
|
||||
cnodeid_get_geoid(cnodeid_t cnode)
|
||||
{
|
||||
|
||||
struct hubdev_info *hubdev;
|
||||
|
||||
hubdev = (struct hubdev_info *)(NODEPDA(cnode)->pdinfo);
|
||||
return hubdev->hdi_geoid;
|
||||
|
||||
}
|
||||
|
||||
subsys_initcall(sn_pci_init);
|
||||
Reference in New Issue
Block a user