/*
* 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) 1992-1997,2000-2006 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)
#define IS_TIOCP_SOFT(ps) (ps->pbi_bridge_type == PCIBR_BRIDGETYPE_TIOCP)


/*
* 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) ((u64)(x) < PCI32_DIRECT_BASE && \
(u64)(x) >= PCI32_MAPPED_BASE)
#define IS_PCI32_DIRECT(x) ((u64)(x) >= PCI32_MAPPED_BASE)


/*
* Bridge PMU Address Transaltion Entry Attibutes
*/
#define PCI32_ATE_V (0x1 << 0)
#define PCI32_ATE_CO (0x1 << 1) /* PIC ASIC ONLY */
#define PCI32_ATE_PIO (0x1 << 1) /* TIOCP ASIC ONLY */
#define PCI32_ATE_MSI (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((u64)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{
u64 *ate;
u64 num_ate;
u64 lowest_free_index;
};

struct pcibus_info {
struct pcibus_bussoft pbi_buscommon; /* common header */
u32 pbi_moduleid;
short pbi_bridge_type;
short pbi_bridge_mode;

struct ate_resource pbi_int_ate_resource;
u64 pbi_int_ate_size;

u64 pbi_dir_xbase;
char pbi_hub_xid;

u64 pbi_devreg[8];

u32 pbi_valid_devices;
u32 pbi_enabled_devices;

spinlock_t pbi_lock;
};

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, int type);
extern dma_addr_t pcibr_dma_map_consistent(struct pci_dev *, unsigned long, size_t, int type);
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 *, u64);
extern void pcireg_control_bit_set(struct pcibus_info *, u64);
extern u64 pcireg_tflush_get(struct pcibus_info *);
extern u64 pcireg_intr_status_get(struct pcibus_info *);
extern void pcireg_intr_enable_bit_clr(struct pcibus_info *, u64);
extern void pcireg_intr_enable_bit_set(struct pcibus_info *, u64);
extern void pcireg_intr_addr_addr_set(struct pcibus_info *, int, u64);
extern void pcireg_force_intr_set(struct pcibus_info *, int);
extern u64 pcireg_wrb_flush_get(struct pcibus_info *, int);
extern void pcireg_int_ate_set(struct pcibus_info *, int, u64);
extern u64 __iomem * 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, u64);
extern int sal_pcibr_slot_enable(struct pcibus_info *soft, int device,
void *resp, char **ssdt);
extern int sal_pcibr_slot_disable(struct pcibus_info *soft, int device,
int action, void *resp);
extern u16 sn_ioboard_to_pci_bus(struct pci_bus *pci_bus);
#endif