machvec.h

/*
 * Machine vector for IA-64.
 *
 * Copyright (C) 1999 Silicon Graphics, Inc.
 * Copyright (C) Srinivasa Thirumalachar <sprasad@engr.sgi.com>
 * Copyright (C) Vijay Chander <vijay@engr.sgi.com>
 * Copyright (C) 1999-2001, 2003-2004 Hewlett-Packard Co.
 *	David Mosberger-Tang <davidm@hpl.hp.com>
 */
#ifndef _ASM_IA64_MACHVEC_H
#define _ASM_IA64_MACHVEC_H

#include <linux/types.h>
#include <linux/swiotlb.h>

/* forward declarations: */
struct device;
struct pt_regs;
struct scatterlist;
struct page;
struct mm_struct;
struct pci_bus;
struct task_struct;
struct pci_dev;
struct msi_desc;
struct dma_attrs;

typedef void ia64_mv_setup_t (char **);
typedef void ia64_mv_cpu_init_t (void);
typedef void ia64_mv_irq_init_t (void);
typedef void ia64_mv_send_ipi_t (int, int, int, int);
typedef void ia64_mv_timer_interrupt_t (int, void *);
typedef void ia64_mv_global_tlb_purge_t (struct mm_struct *, unsigned long, unsigned long, unsigned long);
typedef void ia64_mv_tlb_migrate_finish_t (struct mm_struct *);
typedef u8 ia64_mv_irq_to_vector (int);
typedef unsigned int ia64_mv_local_vector_to_irq (u8);
typedef char *ia64_mv_pci_get_legacy_mem_t (struct pci_bus *);
typedef int ia64_mv_pci_legacy_read_t (struct pci_bus *, u16 port, u32 *val,
				       u8 size);
typedef int ia64_mv_pci_legacy_write_t (struct pci_bus *, u16 port, u32 val,
					u8 size);
typedef void ia64_mv_migrate_t(struct task_struct * task);
typedef void ia64_mv_pci_fixup_bus_t (struct pci_bus *);
typedef void ia64_mv_kernel_launch_event_t(void);

/* DMA-mapping interface: */
typedef void ia64_mv_dma_init (void);
typedef void *ia64_mv_dma_alloc_coherent (struct device *, size_t, dma_addr_t *, gfp_t);
typedef void ia64_mv_dma_free_coherent (struct device *, size_t, void *, dma_addr_t);
typedef dma_addr_t ia64_mv_dma_map_single (struct device *, void *, size_t, int);
typedef void ia64_mv_dma_unmap_single (struct device *, dma_addr_t, size_t, int);
typedef int ia64_mv_dma_map_sg (struct device *, struct scatterlist *, int, int);
typedef void ia64_mv_dma_unmap_sg (struct device *, struct scatterlist *, int, int);
typedef void ia64_mv_dma_sync_single_for_cpu (struct device *, dma_addr_t, size_t, int);
typedef void ia64_mv_dma_sync_sg_for_cpu (struct device *, struct scatterlist *, int, int);
typedef void ia64_mv_dma_sync_single_for_device (struct device *, dma_addr_t, size_t, int);
typedef void ia64_mv_dma_sync_sg_for_device (struct device *, struct scatterlist *, int, int);
typedef int ia64_mv_dma_mapping_error(struct device *, dma_addr_t dma_addr);
typedef int ia64_mv_dma_supported (struct device *, u64);

typedef dma_addr_t ia64_mv_dma_map_single_attrs (struct device *, void *, size_t, int, struct dma_attrs *);
typedef void ia64_mv_dma_unmap_single_attrs (struct device *, dma_addr_t, size_t, int, struct dma_attrs *);
typedef int ia64_mv_dma_map_sg_attrs (struct device *, struct scatterlist *, int, int, struct dma_attrs *);
typedef void ia64_mv_dma_unmap_sg_attrs (struct device *, struct scatterlist *, int, int, struct dma_attrs *);
typedef u64 ia64_mv_dma_get_required_mask (struct device *);

/*
 * WARNING: The legacy I/O space is _architected_.  Platforms are
 * expected to follow this architected model (see Section 10.7 in the
 * IA-64 Architecture Software Developer's Manual).  Unfortunately,
 * some broken machines do not follow that model, which is why we have
 * to make the inX/outX operations part of the machine vector.
 * Platform designers should follow the architected model whenever
 * possible.
 */
typedef unsigned int ia64_mv_inb_t (unsigned long);
typedef unsigned int ia64_mv_inw_t (unsigned long);
typedef unsigned int ia64_mv_inl_t (unsigned long);
typedef void ia64_mv_outb_t (unsigned char, unsigned long);
typedef void ia64_mv_outw_t (unsigned short, unsigned long);
typedef void ia64_mv_outl_t (unsigned int, unsigned long);
typedef void ia64_mv_mmiowb_t (void);
typedef unsigned char ia64_mv_readb_t (const volatile void __iomem *);
typedef unsigned short ia64_mv_readw_t (const volatile void __iomem *);
typedef unsigned int ia64_mv_readl_t (const volatile void __iomem *);
typedef unsigned long ia64_mv_readq_t (const volatile void __iomem *);
typedef unsigned char ia64_mv_readb_relaxed_t (const volatile void __iomem *);
typedef unsigned short ia64_mv_readw_relaxed_t (const volatile void __iomem *);
typedef unsigned int ia64_mv_readl_relaxed_t (const volatile void __iomem *);
typedef unsigned long ia64_mv_readq_relaxed_t (const volatile void __iomem *);

typedef int ia64_mv_setup_msi_irq_t (struct pci_dev *pdev, struct msi_desc *);
typedef void ia64_mv_teardown_msi_irq_t (unsigned int irq);

static inline void
machvec_noop (void)
{
}

static inline void
machvec_noop_mm (struct mm_struct *mm)
{
}

static inline void
machvec_noop_task (struct task_struct *task)
{
}

static inline void
machvec_noop_bus (struct pci_bus *bus)
{
}

extern void machvec_setup (char **);
extern void machvec_timer_interrupt (int, void *);
extern void machvec_dma_sync_single (struct device *, dma_addr_t, size_t, int);
extern void machvec_dma_sync_sg (struct device *, struct scatterlist *, int, int);
extern void machvec_tlb_migrate_finish (struct mm_struct *);

# if defined (CONFIG_IA64_HP_SIM)
#  include <asm/machvec_hpsim.h>
# elif defined (CONFIG_IA64_DIG)
#  include <asm/machvec_dig.h>
# elif defined(CONFIG_IA64_DIG_VTD)
#  include <asm/machvec_dig_vtd.h>
# elif defined (CONFIG_IA64_HP_ZX1)
#  include <asm/machvec_hpzx1.h>
# elif defined (CONFIG_IA64_HP_ZX1_SWIOTLB)
#  include <asm/machvec_hpzx1_swiotlb.h>
# elif defined (CONFIG_IA64_SGI_SN2)
#  include <asm/machvec_sn2.h>
# elif defined (CONFIG_IA64_SGI_UV)
#  include <asm/machvec_uv.h>
# elif defined (CONFIG_IA64_XEN_GUEST)
#  include <asm/machvec_xen.h>
# elif defined (CONFIG_IA64_GENERIC)

# ifdef MACHVEC_PLATFORM_HEADER
#  include MACHVEC_PLATFORM_HEADER
# else
#  define platform_name		ia64_mv.name
#  define platform_setup	ia64_mv.setup
#  define platform_cpu_init	ia64_mv.cpu_init
#  define platform_irq_init	ia64_mv.irq_init
#  define platform_send_ipi	ia64_mv.send_ipi
#  define platform_timer_interrupt	ia64_mv.timer_interrupt
#  define platform_global_tlb_purge	ia64_mv.global_tlb_purge
#  define platform_tlb_migrate_finish	ia64_mv.tlb_migrate_finish
#  define platform_dma_init		ia64_mv.dma_init
#  define platform_dma_alloc_coherent	ia64_mv.dma_alloc_coherent
#  define platform_dma_free_coherent	ia64_mv.dma_free_coherent
#  define platform_dma_map_single_attrs	ia64_mv.dma_map_single_attrs
#  define platform_dma_unmap_single_attrs	ia64_mv.dma_unmap_single_attrs
#  define platform_dma_map_sg_attrs	ia64_mv.dma_map_sg_attrs
#  define platform_dma_unmap_sg_attrs	ia64_mv.dma_unmap_sg_attrs
#  define platform_dma_sync_single_for_cpu ia64_mv.dma_sync_single_for_cpu
#  define platform_dma_sync_sg_for_cpu	ia64_mv.dma_sync_sg_for_cpu
#  define platform_dma_sync_single_for_device ia64_mv.dma_sync_single_for_device
#  define platform_dma_sync_sg_for_device ia64_mv.dma_sync_sg_for_device
#  define platform_dma_mapping_error		ia64_mv.dma_mapping_error
#  define platform_dma_supported	ia64_mv.dma_supported
#  define platform_dma_get_required_mask ia64_mv.dma_get_required_mask
#  define platform_irq_to_vector	ia64_mv.irq_to_vector
#  define platform_local_vector_to_irq	ia64_mv.local_vector_to_irq
#  define platform_pci_get_legacy_mem	ia64_mv.pci_get_legacy_mem
#  define platform_pci_legacy_read	ia64_mv.pci_legacy_read
#  define platform_pci_legacy_write	ia64_mv.pci_legacy_write
#  define platform_inb		ia64_mv.inb
#  define platform_inw		ia64_mv.inw
#  define platform_inl		ia64_mv.inl
#  define platform_outb		ia64_mv.outb
#  define platform_outw		ia64_mv.outw
#  define platform_outl		ia64_mv.outl
#  define platform_mmiowb	ia64_mv.mmiowb
#  define platform_readb        ia64_mv.readb
#  define platform_readw        ia64_mv.readw
#  define platform_readl        ia64_mv.readl
#  define platform_readq        ia64_mv.readq
#  define platform_readb_relaxed        ia64_mv.readb_relaxed
#  define platform_readw_relaxed        ia64_mv.readw_relaxed
#  define platform_readl_relaxed        ia64_mv.readl_relaxed
#  define platform_readq_relaxed        ia64_mv.readq_relaxed
#  define platform_migrate		ia64_mv.migrate
#  define platform_setup_msi_irq	ia64_mv.setup_msi_irq
#  define platform_teardown_msi_irq	ia64_mv.teardown_msi_irq
#  define platform_pci_fixup_bus	ia64_mv.pci_fixup_bus
#  define platform_kernel_launch_event	ia64_mv.kernel_launch_event
# endif

/* __attribute__((__aligned__(16))) is required to make size of the
 * structure multiple of 16 bytes.
 * This will fillup the holes created because of section 3.3.1 in
 * Software Conventions guide.
 */
struct ia64_machine_vector {
	const char *name;
	ia64_mv_setup_t *setup;
	ia64_mv_cpu_init_t *cpu_init;
	ia64_mv_irq_init_t *irq_init;
	ia64_mv_send_ipi_t *send_ipi;
	ia64_mv_timer_interrupt_t *timer_interrupt;
	ia64_mv_global_tlb_purge_t *global_tlb_purge;
	ia64_mv_tlb_migrate_finish_t *tlb_migrate_finish;
	ia64_mv_dma_init *dma_init;
	ia64_mv_dma_alloc_coherent *dma_alloc_coherent;
	ia64_mv_dma_free_coherent *dma_free_coherent;
	ia64_mv_dma_map_single_attrs *dma_map_single_attrs;
	ia64_mv_dma_unmap_single_attrs *dma_unmap_single_attrs;
	ia64_mv_dma_map_sg_attrs *dma_map_sg_attrs;
	ia64_mv_dma_unmap_sg_attrs *dma_unmap_sg_attrs;
	ia64_mv_dma_sync_single_for_cpu *dma_sync_single_for_cpu;
	ia64_mv_dma_sync_sg_for_cpu *dma_sync_sg_for_cpu;
	ia64_mv_dma_sync_single_for_device *dma_sync_single_for_device;
	ia64_mv_dma_sync_sg_for_device *dma_sync_sg_for_device;
	ia64_mv_dma_mapping_error *dma_mapping_error;
	ia64_mv_dma_supported *dma_supported;
	ia64_mv_dma_get_required_mask *dma_get_required_mask;
	ia64_mv_irq_to_vector *irq_to_vector;
	ia64_mv_local_vector_to_irq *local_vector_to_irq;
	ia64_mv_pci_get_legacy_mem_t *pci_get_legacy_mem;
	ia64_mv_pci_legacy_read_t *pci_legacy_read;
	ia64_mv_pci_legacy_write_t *pci_legacy_write;
	ia64_mv_inb_t *inb;
	ia64_mv_inw_t *inw;
	ia64_mv_inl_t *inl;
	ia64_mv_outb_t *outb;
	ia64_mv_outw_t *outw;
	ia64_mv_outl_t *outl;
	ia64_mv_mmiowb_t *mmiowb;
	ia64_mv_readb_t *readb;
	ia64_mv_readw_t *readw;
	ia64_mv_readl_t *readl;
	ia64_mv_readq_t *readq;
	ia64_mv_readb_relaxed_t *readb_relaxed;
	ia64_mv_readw_relaxed_t *readw_relaxed;
	ia64_mv_readl_relaxed_t *readl_relaxed;
	ia64_mv_readq_relaxed_t *readq_relaxed;
	ia64_mv_migrate_t *migrate;
	ia64_mv_setup_msi_irq_t *setup_msi_irq;
	ia64_mv_teardown_msi_irq_t *teardown_msi_irq;
	ia64_mv_pci_fixup_bus_t *pci_fixup_bus;
	ia64_mv_kernel_launch_event_t *kernel_launch_event;
} __attribute__((__aligned__(16))); /* align attrib? see above comment */

#define MACHVEC_INIT(name)			\
{						\
	#name,					\
	platform_setup,				\
	platform_cpu_init,			\
	platform_irq_init,			\
	platform_send_ipi,			\
	platform_timer_interrupt,		\
	platform_global_tlb_purge,		\
	platform_tlb_migrate_finish,		\
	platform_dma_init,			\
	platform_dma_alloc_coherent,		\
	platform_dma_free_coherent,		\
	platform_dma_map_single_attrs,		\
	platform_dma_unmap_single_attrs,	\
	platform_dma_map_sg_attrs,		\
	platform_dma_unmap_sg_attrs,		\
	platform_dma_sync_single_for_cpu,	\
	platform_dma_sync_sg_for_cpu,		\
	platform_dma_sync_single_for_device,	\
	platform_dma_sync_sg_for_device,	\
	platform_dma_mapping_error,			\
	platform_dma_supported,			\
	platform_dma_get_required_mask,		\
	platform_irq_to_vector,			\
	platform_local_vector_to_irq,		\
	platform_pci_get_legacy_mem,		\
	platform_pci_legacy_read,		\
	platform_pci_legacy_write,		\
	platform_inb,				\
	platform_inw,				\
	platform_inl,				\
	platform_outb,				\
	platform_outw,				\
	platform_outl,				\
	platform_mmiowb,			\
	platform_readb,				\
	platform_readw,				\
	platform_readl,				\
	platform_readq,				\
	platform_readb_relaxed,			\
	platform_readw_relaxed,			\
	platform_readl_relaxed,			\
	platform_readq_relaxed,			\
	platform_migrate,			\
	platform_setup_msi_irq,			\
	platform_teardown_msi_irq,		\
	platform_pci_fixup_bus,			\
	platform_kernel_launch_event            \
}

extern struct ia64_machine_vector ia64_mv;
extern void machvec_init (const char *name);
extern void machvec_init_from_cmdline(const char *cmdline);

# else
#  error Unknown configuration.  Update arch/ia64/include/asm/machvec.h.
# endif /* CONFIG_IA64_GENERIC */

/*
 * Define default versions so we can extend machvec for new platforms without having
 * to update the machvec files for all existing platforms.
 */
#ifndef platform_setup
# define platform_setup			machvec_setup
#endif
#ifndef platform_cpu_init
# define platform_cpu_init		machvec_noop
#endif
#ifndef platform_irq_init
# define platform_irq_init		machvec_noop
#endif

#ifndef platform_send_ipi
# define platform_send_ipi		ia64_send_ipi	/* default to architected version */
#endif
#ifndef platform_timer_interrupt
# define platform_timer_interrupt 	machvec_timer_interrupt
#endif
#ifndef platform_global_tlb_purge
# define platform_global_tlb_purge	ia64_global_tlb_purge /* default to architected version */
#endif
#ifndef platform_tlb_migrate_finish
# define platform_tlb_migrate_finish	machvec_noop_mm
#endif
#ifndef platform_kernel_launch_event
# define platform_kernel_launch_event	machvec_noop
#endif
#ifndef platform_dma_init
# define platform_dma_init		swiotlb_init
#endif
#ifndef platform_dma_alloc_coherent
# define platform_dma_alloc_coherent	swiotlb_alloc_coherent
#endif
#ifndef platform_dma_free_coherent
# define platform_dma_free_coherent	swiotlb_free_coherent
#endif
#ifndef platform_dma_map_single_attrs
# define platform_dma_map_single_attrs	swiotlb_map_single_attrs
#endif
#ifndef platform_dma_unmap_single_attrs
# define platform_dma_unmap_single_attrs	swiotlb_unmap_single_attrs
#endif
#ifndef platform_dma_map_sg_attrs
# define platform_dma_map_sg_attrs	swiotlb_map_sg_attrs
#endif
#ifndef platform_dma_unmap_sg_attrs
# define platform_dma_unmap_sg_attrs	swiotlb_unmap_sg_attrs
#endif
#ifndef platform_dma_sync_single_for_cpu
# define platform_dma_sync_single_for_cpu	swiotlb_sync_single_for_cpu
#endif
#ifndef platform_dma_sync_sg_for_cpu
# define platform_dma_sync_sg_for_cpu		swiotlb_sync_sg_for_cpu
#endif
#ifndef platform_dma_sync_single_for_device
# define platform_dma_sync_single_for_device	swiotlb_sync_single_for_device
#endif
#ifndef platform_dma_sync_sg_for_device
# define platform_dma_sync_sg_for_device	swiotlb_sync_sg_for_device
#endif
#ifndef platform_dma_mapping_error
# define platform_dma_mapping_error		swiotlb_dma_mapping_error
#endif
#ifndef platform_dma_supported
# define  platform_dma_supported	swiotlb_dma_supported
#endif
#ifndef platform_dma_get_required_mask
# define  platform_dma_get_required_mask	ia64_dma_get_required_mask
#endif
#ifndef platform_irq_to_vector
# define platform_irq_to_vector		__ia64_irq_to_vector
#endif
#ifndef platform_local_vector_to_irq
# define platform_local_vector_to_irq	__ia64_local_vector_to_irq
#endif
#ifndef platform_pci_get_legacy_mem
# define platform_pci_get_legacy_mem	ia64_pci_get_legacy_mem
#endif
#ifndef platform_pci_legacy_read
# define platform_pci_legacy_read	ia64_pci_legacy_read
extern int ia64_pci_legacy_read(struct pci_bus *bus, u16 port, u32 *val, u8 size);
#endif
#ifndef platform_pci_legacy_write
# define platform_pci_legacy_write	ia64_pci_legacy_write
extern int ia64_pci_legacy_write(struct pci_bus *bus, u16 port, u32 val, u8 size);
#endif
#ifndef platform_inb
# define platform_inb		__ia64_inb
#endif
#ifndef platform_inw
# define platform_inw		__ia64_inw
#endif
#ifndef platform_inl
# define platform_inl		__ia64_inl
#endif
#ifndef platform_outb
# define platform_outb		__ia64_outb
#endif
#ifndef platform_outw
# define platform_outw		__ia64_outw
#endif
#ifndef platform_outl
# define platform_outl		__ia64_outl
#endif
#ifndef platform_mmiowb
# define platform_mmiowb	__ia64_mmiowb
#endif
#ifndef platform_readb
# define platform_readb		__ia64_readb
#endif
#ifndef platform_readw
# define platform_readw		__ia64_readw
#endif
#ifndef platform_readl
# define platform_readl		__ia64_readl
#endif
#ifndef platform_readq
# define platform_readq		__ia64_readq
#endif
#ifndef platform_readb_relaxed
# define platform_readb_relaxed	__ia64_readb_relaxed
#endif
#ifndef platform_readw_relaxed
# define platform_readw_relaxed	__ia64_readw_relaxed
#endif
#ifndef platform_readl_relaxed
# define platform_readl_relaxed	__ia64_readl_relaxed
#endif
#ifndef platform_readq_relaxed
# define platform_readq_relaxed	__ia64_readq_relaxed
#endif
#ifndef platform_migrate
# define platform_migrate machvec_noop_task
#endif
#ifndef platform_setup_msi_irq
# define platform_setup_msi_irq		((ia64_mv_setup_msi_irq_t*)NULL)
#endif
#ifndef platform_teardown_msi_irq
# define platform_teardown_msi_irq	((ia64_mv_teardown_msi_irq_t*)NULL)
#endif
#ifndef platform_pci_fixup_bus
# define platform_pci_fixup_bus	machvec_noop_bus
#endif

#endif /* _ASM_IA64_MACHVEC_H */