kevin/linux
1
Fork 0
Code
79b95a454b
linux/include/asm-ia64/sn/pcibr_provider.h
Christoph Lameter 7c2a6c62c0 [IA64] Altix pcibus_to_node implementation 
The Altix subarch does not provide node information via ACPI. Instead hooks
are used to fixup pci structures. This patch determines the nodes for Altix
PCI busses.

Remote Bridges:
---------------
Altix supports remote I/O nodes without memory or processors but with bridges.
The TIOCA type of bridge is an AGP bridge and the PROM provides information
about the closest node. That information will be returned by pcibus_to_node.

The TIOCP remote bridge type is a PCI bridge but the PROM does not provide a
closest node id. pcibus_to_node will return -1 for devices on those bridges
meaning that device control structures may be allocated on any node.

Safeguard:
----------
Should the fixups result in invalid node information for a pci controller then
a warning will be printed and pcibus_to_node will return -1.


This patch also fixes the "FIXME" in sn_dma_alloc_coherent. This means that
dma_alloc_coherent will now use alloc_pages_node to allocate memory local to
the node that the PCI device is connected to.

Signed-off-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2005-07-12 16:12:55 -07:00

160 lines
5.7 KiB
C
Raw Blame History

/*
* 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.
*/
#ifndef _ASM_IA64_SN_PCI_PCIBR_PROVIDER_H
#define _ASM_IA64_SN_PCI_PCIBR_PROVIDER_H
#include <asm/sn/intr.h>
#include <asm/sn/pcibus_provider_defs.h>
/* Workarounds */
#define PV907516 (1 << 1) /* TIOCP: Don't write the write buffer flush reg */
#define BUSTYPE_MASK 0x1
/* Macros given a pcibus structure */
#define IS_PCIX(ps) ((ps)->pbi_bridge_mode & BUSTYPE_MASK)
#define IS_PCI_BRIDGE_ASIC(asic) (asic == PCIIO_ASIC_TYPE_PIC || \
asic == PCIIO_ASIC_TYPE_TIOCP)
#define IS_PIC_SOFT(ps) (ps->pbi_bridge_type == PCIBR_BRIDGETYPE_PIC)
/*
* The different PCI Bridge types supported on the SGI Altix platforms
*/
#define PCIBR_BRIDGETYPE_UNKNOWN -1
#define PCIBR_BRIDGETYPE_PIC 2
#define PCIBR_BRIDGETYPE_TIOCP 3
/*
* Bridge 64bit Direct Map Attributes
*/
#define PCI64_ATTR_PREF (1ull << 59)
#define PCI64_ATTR_PREC (1ull << 58)
#define PCI64_ATTR_VIRTUAL (1ull << 57)
#define PCI64_ATTR_BAR (1ull << 56)
#define PCI64_ATTR_SWAP (1ull << 55)
#define PCI64_ATTR_VIRTUAL1 (1ull << 54)
#define PCI32_LOCAL_BASE 0
#define PCI32_MAPPED_BASE 0x40000000
#define PCI32_DIRECT_BASE 0x80000000
#define IS_PCI32_MAPPED(x) ((uint64_t)(x) < PCI32_DIRECT_BASE && \
(uint64_t)(x) >= PCI32_MAPPED_BASE)
#define IS_PCI32_DIRECT(x) ((uint64_t)(x) >= PCI32_MAPPED_BASE)
/*
* Bridge PMU Address Transaltion Entry Attibutes
*/
#define PCI32_ATE_V (0x1 << 0)
#define PCI32_ATE_CO (0x1 << 1)
#define PCI32_ATE_PREC (0x1 << 2)
#define PCI32_ATE_PREF (0x1 << 3)
#define PCI32_ATE_BAR (0x1 << 4)
#define PCI32_ATE_ADDR_SHFT 12
#define MINIMAL_ATES_REQUIRED(addr, size) \
(IOPG(IOPGOFF(addr) + (size) - 1) == IOPG((size) - 1))
#define MINIMAL_ATE_FLAG(addr, size) \
(MINIMAL_ATES_REQUIRED((uint64_t)addr, size) ? 1 : 0)
/* bit 29 of the pci address is the SWAP bit */
#define ATE_SWAPSHIFT 29
#define ATE_SWAP_ON(x) ((x) |= (1 << ATE_SWAPSHIFT))
#define ATE_SWAP_OFF(x) ((x) &= ~(1 << ATE_SWAPSHIFT))
/*
* I/O page size
*/
#if PAGE_SIZE < 16384
#define IOPFNSHIFT 12 /* 4K per mapped page */
#else
#define IOPFNSHIFT 14 /* 16K per mapped page */
#endif
#define IOPGSIZE (1 << IOPFNSHIFT)
#define IOPG(x) ((x) >> IOPFNSHIFT)
#define IOPGOFF(x) ((x) & (IOPGSIZE-1))
#define PCIBR_DEV_SWAP_DIR (1ull << 19)
#define PCIBR_CTRL_PAGE_SIZE (0x1 << 21)
/*
* PMU resources.
*/
struct ate_resource{
uint64_t *ate;
uint64_t num_ate;
uint64_t lowest_free_index;
};
struct pcibus_info {
struct pcibus_bussoft pbi_buscommon; /* common header */
uint32_t pbi_moduleid;
short pbi_bridge_type;
short pbi_bridge_mode;
struct ate_resource pbi_int_ate_resource;
uint64_t pbi_int_ate_size;
uint64_t pbi_dir_xbase;
char pbi_hub_xid;
uint64_t pbi_devreg[8];
uint32_t pbi_valid_devices;
uint32_t pbi_enabled_devices;
spinlock_t pbi_lock;
};
/*
* pcibus_info structure locking macros
*/
inline static unsigned long
pcibr_lock(struct pcibus_info *pcibus_info)
{
unsigned long flag;
spin_lock_irqsave(&pcibus_info->pbi_lock, flag);
return(flag);
}
#define pcibr_unlock(pcibus_info, flag) spin_unlock_irqrestore(&pcibus_info->pbi_lock, flag)
extern int pcibr_init_provider(void);
extern void *pcibr_bus_fixup(struct pcibus_bussoft *, struct pci_controller *);
extern dma_addr_t pcibr_dma_map(struct pci_dev *, unsigned long, size_t);
extern dma_addr_t pcibr_dma_map_consistent(struct pci_dev *, unsigned long, size_t);
extern void pcibr_dma_unmap(struct pci_dev *, dma_addr_t, int);
/*
* prototypes for the bridge asic register access routines in pcibr_reg.c
*/
extern void pcireg_control_bit_clr(struct pcibus_info *, uint64_t);
extern void pcireg_control_bit_set(struct pcibus_info *, uint64_t);
extern uint64_t pcireg_tflush_get(struct pcibus_info *);
extern uint64_t pcireg_intr_status_get(struct pcibus_info *);
extern void pcireg_intr_enable_bit_clr(struct pcibus_info *, uint64_t);
extern void pcireg_intr_enable_bit_set(struct pcibus_info *, uint64_t);
extern void pcireg_intr_addr_addr_set(struct pcibus_info *, int, uint64_t);
extern void pcireg_force_intr_set(struct pcibus_info *, int);
extern uint64_t pcireg_wrb_flush_get(struct pcibus_info *, int);
extern void pcireg_int_ate_set(struct pcibus_info *, int, uint64_t);
extern uint64_t * pcireg_int_ate_addr(struct pcibus_info *, int);
extern void pcibr_force_interrupt(struct sn_irq_info *sn_irq_info);
extern void pcibr_change_devices_irq(struct sn_irq_info *sn_irq_info);
extern int pcibr_ate_alloc(struct pcibus_info *, int);
extern void pcibr_ate_free(struct pcibus_info *, int);
extern void ate_write(struct pcibus_info *, int, int, uint64_t);
extern int sal_pcibr_slot_enable(struct pcibus_info *soft, int device,
void *resp);
extern int sal_pcibr_slot_disable(struct pcibus_info *soft, int device,
int action, void *resp);
#endif
View Git Blame Copy Permalink