[deliverable/linux.git] / arch / s390 / include / asm / pci.h

#ifndef __ASM_S390_PCI_H
#define __ASM_S390_PCI_H

/* must be set before including asm-generic/pci.h */
#define PCI_DMA_BUS_IS_PHYS (0)
/* must be set before including pci_clp.h */
#define PCI_BAR_COUNT	6

#include <linux/pci.h>
#include <asm-generic/pci.h>
#include <asm-generic/pci-dma-compat.h>
#include <asm/pci_clp.h>
#include <asm/pci_debug.h>

#define PCIBIOS_MIN_IO		0x1000
#define PCIBIOS_MIN_MEM		0x10000000

#define pcibios_assign_all_busses()	(0)

void __iomem *pci_iomap(struct pci_dev *, int, unsigned long);
void pci_iounmap(struct pci_dev *, void __iomem *);
int pci_domain_nr(struct pci_bus *);
int pci_proc_domain(struct pci_bus *);

#define ZPCI_BUS_NR			0	/* default bus number */
#define ZPCI_DEVFN			0	/* default device number */

/* PCI Function Controls */
#define ZPCI_FC_FN_ENABLED		0x80
#define ZPCI_FC_ERROR			0x40
#define ZPCI_FC_BLOCKED			0x20
#define ZPCI_FC_DMA_ENABLED		0x10

struct zpci_fmb {
	u32 format	:  8;
	u32 dma_valid	:  1;
	u32		: 23;
	u32 samples;
	u64 last_update;
	/* hardware counters */
	u64 ld_ops;
	u64 st_ops;
	u64 stb_ops;
	u64 rpcit_ops;
	u64 dma_rbytes;
	u64 dma_wbytes;
	/* software counters */
	atomic64_t allocated_pages;
	atomic64_t mapped_pages;
	atomic64_t unmapped_pages;
} __packed __aligned(16);

enum zpci_state {
	ZPCI_FN_STATE_RESERVED,
	ZPCI_FN_STATE_STANDBY,
	ZPCI_FN_STATE_CONFIGURED,
	ZPCI_FN_STATE_ONLINE,
	NR_ZPCI_FN_STATES,
};

struct zpci_bar_struct {
	struct resource *res;		/* bus resource */
	u32		val;		/* bar start & 3 flag bits */
	u16		map_idx;	/* index into bar mapping array */
	u8		size;		/* order 2 exponent */
};

/* Private data per function */
struct zpci_dev {
	struct pci_dev	*pdev;
	struct pci_bus	*bus;
	struct list_head entry;		/* list of all zpci_devices, needed for hotplug, etc. */

	enum zpci_state state;
	u32		fid;		/* function ID, used by sclp */
	u32		fh;		/* function handle, used by insn's */
	u16		vfn;		/* virtual function number */
	u16		pchid;		/* physical channel ID */
	u8		pfgid;		/* function group ID */
	u8		pft;		/* pci function type */
	u16		domain;

	u8 pfip[CLP_PFIP_NR_SEGMENTS];	/* pci function internal path */
	u32 uid;			/* user defined id */
	u8 util_str[CLP_UTIL_STR_LEN];	/* utility string */

	/* IRQ stuff */
	u64		msi_addr;	/* MSI address */
	unsigned int	max_msi;	/* maximum number of MSI's */
	struct airq_iv *aibv;		/* adapter interrupt bit vector */
	unsigned int	aisb;		/* number of the summary bit */

	/* DMA stuff */
	unsigned long	*dma_table;
	spinlock_t	dma_table_lock;
	int		tlb_refresh;

	spinlock_t	iommu_bitmap_lock;
	unsigned long	*iommu_bitmap;
	unsigned long	iommu_size;
	unsigned long	iommu_pages;
	unsigned int	next_bit;

	char res_name[16];
	struct zpci_bar_struct bars[PCI_BAR_COUNT];

	u64		start_dma;	/* Start of available DMA addresses */
	u64		end_dma;	/* End of available DMA addresses */
	u64		dma_mask;	/* DMA address space mask */

	/* Function measurement block */
	struct zpci_fmb *fmb;
	u16		fmb_update;	/* update interval */

	enum pci_bus_speed max_bus_speed;

	struct dentry	*debugfs_dev;
	struct dentry	*debugfs_perf;
};

static inline bool zdev_enabled(struct zpci_dev *zdev)
{
	return (zdev->fh & (1UL << 31)) ? true : false;
}

extern const struct attribute_group *zpci_attr_groups[];

/* -----------------------------------------------------------------------------
  Prototypes
----------------------------------------------------------------------------- */
/* Base stuff */
int zpci_create_device(struct zpci_dev *);
int zpci_enable_device(struct zpci_dev *);
int zpci_disable_device(struct zpci_dev *);
void zpci_stop_device(struct zpci_dev *);
int zpci_register_ioat(struct zpci_dev *, u8, u64, u64, u64);
int zpci_unregister_ioat(struct zpci_dev *, u8);

/* CLP */
int clp_scan_pci_devices(void);
int clp_rescan_pci_devices(void);
int clp_rescan_pci_devices_simple(void);
int clp_add_pci_device(u32, u32, int);
int clp_enable_fh(struct zpci_dev *, u8);
int clp_disable_fh(struct zpci_dev *);

#ifdef CONFIG_PCI
/* Error handling and recovery */
void zpci_event_error(void *);
void zpci_event_availability(void *);
void zpci_rescan(void);
bool zpci_is_enabled(void);
#else /* CONFIG_PCI */
static inline void zpci_event_error(void *e) {}
static inline void zpci_event_availability(void *e) {}
static inline void zpci_rescan(void) {}
#endif /* CONFIG_PCI */

#ifdef CONFIG_HOTPLUG_PCI_S390
int zpci_init_slot(struct zpci_dev *);
void zpci_exit_slot(struct zpci_dev *);
#else /* CONFIG_HOTPLUG_PCI_S390 */
static inline int zpci_init_slot(struct zpci_dev *zdev)
{
	return 0;
}
static inline void zpci_exit_slot(struct zpci_dev *zdev) {}
#endif /* CONFIG_HOTPLUG_PCI_S390 */

/* Helpers */
struct zpci_dev *get_zdev(struct pci_dev *);
struct zpci_dev *get_zdev_by_fid(u32);

/* DMA */
int zpci_dma_init(void);
void zpci_dma_exit(void);

/* FMB */
int zpci_fmb_enable_device(struct zpci_dev *);
int zpci_fmb_disable_device(struct zpci_dev *);

/* Debug */
int zpci_debug_init(void);
void zpci_debug_exit(void);
void zpci_debug_init_device(struct zpci_dev *);
void zpci_debug_exit_device(struct zpci_dev *);
void zpci_debug_info(struct zpci_dev *, struct seq_file *);

#endif
Commit	Line	Data
1da177e4 LT	1	#ifndef __ASM_S390_PCI_H
	2	#define __ASM_S390_PCI_H
	3
cd248341	4	/* must be set before including asm-generic/pci.h */
1da177e4	5	#define PCI_DMA_BUS_IS_PHYS (0)
cd248341 JG	6	/* must be set before including pci_clp.h */
cd248341 JG	7	#define PCI_BAR_COUNT 6
1da177e4	8
57b5918c	9	#include <linux/pci.h>
cd248341 JG	10	#include <asm-generic/pci.h>
cd248341 JG	11	#include <asm-generic/pci-dma-compat.h>
a755a45d	12	#include <asm/pci_clp.h>
d0b08853	13	#include <asm/pci_debug.h>
1da177e4	14
cd248341 JG	15	#define PCIBIOS_MIN_IO 0x1000
	16	#define PCIBIOS_MIN_MEM 0x10000000
	17
	18	#define pcibios_assign_all_busses() (0)
	19
	20	void __iomem pci_iomap(struct pci_dev , int, unsigned long);
	21	void pci_iounmap(struct pci_dev , void __iomem );
	22	int pci_domain_nr(struct pci_bus *);
	23	int pci_proc_domain(struct pci_bus *);
	24
	25	#define ZPCI_BUS_NR 0 /* default bus number */
	26	#define ZPCI_DEVFN 0 /* default device number */
	27
	28	/* PCI Function Controls */
	29	#define ZPCI_FC_FN_ENABLED 0x80
	30	#define ZPCI_FC_ERROR 0x40
	31	#define ZPCI_FC_BLOCKED 0x20
	32	#define ZPCI_FC_DMA_ENABLED 0x10
	33
d0b08853 JG	34	struct zpci_fmb {
	35	u32 format : 8;
	36	u32 dma_valid : 1;
	37	u32 : 23;
	38	u32 samples;
	39	u64 last_update;
	40	/* hardware counters */
	41	u64 ld_ops;
	42	u64 st_ops;
	43	u64 stb_ops;
	44	u64 rpcit_ops;
	45	u64 dma_rbytes;
	46	u64 dma_wbytes;
	47	/* software counters */
	48	atomic64_t allocated_pages;
	49	atomic64_t mapped_pages;
	50	atomic64_t unmapped_pages;
	51	} __packed __aligned(16);
	52
cd248341 JG	53	enum zpci_state {
	54	ZPCI_FN_STATE_RESERVED,
	55	ZPCI_FN_STATE_STANDBY,
	56	ZPCI_FN_STATE_CONFIGURED,
	57	ZPCI_FN_STATE_ONLINE,
	58	NR_ZPCI_FN_STATES,
	59	};
	60
	61	struct zpci_bar_struct {
7a572a3a	62	struct resource res; / bus resource */
cd248341	63	u32 val; /* bar start & 3 flag bits */
cd248341	64	u16 map_idx; /* index into bar mapping array */
7a572a3a	65	u8 size; /* order 2 exponent */
cd248341 JG	66	};
	67
	68	/* Private data per function */
	69	struct zpci_dev {
	70	struct pci_dev *pdev;
	71	struct pci_bus *bus;
	72	struct list_head entry; /* list of all zpci_devices, needed for hotplug, etc. */
	73
	74	enum zpci_state state;
	75	u32 fid; /* function ID, used by sclp */
	76	u32 fh; /* function handle, used by insn's */
ac4995b9	77	u16 vfn; /* virtual function number */
cd248341 JG	78	u16 pchid; /* physical channel ID */
cd248341 JG	79	u8 pfgid; /* function group ID */
ac4995b9	80	u8 pft; /* pci function type */
cd248341 JG	81	u16 domain;
cd248341 JG	82
ac4995b9 SO	83	u8 pfip[CLP_PFIP_NR_SEGMENTS]; /* pci function internal path */
	84	u32 uid; /* user defined id */
	85	u8 util_str[CLP_UTIL_STR_LEN]; /* utility string */
	86
9a4da8a5 JG	87	/* IRQ stuff */
9a4da8a5 JG	88	u64 msi_addr; /* MSI address */
b19148f6	89	unsigned int max_msi; /* maximum number of MSI's */
5d0d8f43	90	struct airq_iv aibv; / adapter interrupt bit vector */
9a4da8a5 JG	91	unsigned int aisb; /* number of the summary bit */
9a4da8a5 JG	92
828b35f6 JG	93	/* DMA stuff */
	94	unsigned long *dma_table;
	95	spinlock_t dma_table_lock;
	96	int tlb_refresh;
	97
	98	spinlock_t iommu_bitmap_lock;
	99	unsigned long *iommu_bitmap;
	100	unsigned long iommu_size;
	101	unsigned long iommu_pages;
	102	unsigned int next_bit;
	103
7a572a3a	104	char res_name[16];
cd248341 JG	105	struct zpci_bar_struct bars[PCI_BAR_COUNT];
cd248341 JG	106
828b35f6 JG	107	u64 start_dma; /* Start of available DMA addresses */
	108	u64 end_dma; /* End of available DMA addresses */
	109	u64 dma_mask; /* DMA address space mask */
	110
d0b08853 JG	111	/* Function measurement block */
	112	struct zpci_fmb *fmb;
	113	u16 fmb_update; /* update interval */
	114
cd248341	115	enum pci_bus_speed max_bus_speed;
d0b08853 JG	116
	117	struct dentry *debugfs_dev;
	118	struct dentry *debugfs_perf;
cd248341 JG	119	};
	120
	121	static inline bool zdev_enabled(struct zpci_dev *zdev)
	122	{
	123	return (zdev->fh & (1UL << 31)) ? true : false;
	124	}
	125
93065d04 SO	126	extern const struct attribute_group *zpci_attr_groups[];
93065d04 SO	127
cd248341 JG	128	/* -----------------------------------------------------------------------------
	129	Prototypes
	130	----------------------------------------------------------------------------- */
	131	/* Base stuff */
cd248341 JG	132	int zpci_create_device(struct zpci_dev *);
cd248341 JG	133	int zpci_enable_device(struct zpci_dev *);
cb65a669	134	int zpci_disable_device(struct zpci_dev *);
cd248341	135	void zpci_stop_device(struct zpci_dev *);
828b35f6 JG	136	int zpci_register_ioat(struct zpci_dev *, u8, u64, u64, u64);
828b35f6 JG	137	int zpci_unregister_ioat(struct zpci_dev *, u8);
cd248341	138
a755a45d	139	/* CLP */
1d578966 SO	140	int clp_scan_pci_devices(void);
1d578966 SO	141	int clp_rescan_pci_devices(void);
57b5918c	142	int clp_rescan_pci_devices_simple(void);
a755a45d JG	143	int clp_add_pci_device(u32, u32, int);
	144	int clp_enable_fh(struct zpci_dev *, u8);
	145	int clp_disable_fh(struct zpci_dev *);
	146
9a17e972	147	#ifdef CONFIG_PCI
cbc0dd1f JG	148	/* Error handling and recovery */
	149	void zpci_event_error(void *);
	150	void zpci_event_availability(void *);
57b5918c	151	void zpci_rescan(void);
aa3b7c29	152	bool zpci_is_enabled(void);
9a17e972 SO	153	#else /* CONFIG_PCI */
	154	static inline void zpci_event_error(void *e) {}
	155	static inline void zpci_event_availability(void *e) {}
57b5918c	156	static inline void zpci_rescan(void) {}
9a17e972	157	#endif /* CONFIG_PCI */
cbc0dd1f	158
67f43f38 SO	159	#ifdef CONFIG_HOTPLUG_PCI_S390
	160	int zpci_init_slot(struct zpci_dev *);
	161	void zpci_exit_slot(struct zpci_dev *);
	162	#else /* CONFIG_HOTPLUG_PCI_S390 */
	163	static inline int zpci_init_slot(struct zpci_dev *zdev)
	164	{
	165	return 0;
	166	}
	167	static inline void zpci_exit_slot(struct zpci_dev *zdev) {}
	168	#endif /* CONFIG_HOTPLUG_PCI_S390 */
	169
cd248341 JG	170	/* Helpers */
	171	struct zpci_dev get_zdev(struct pci_dev );
	172	struct zpci_dev *get_zdev_by_fid(u32);
cd248341	173
828b35f6 JG	174	/* DMA */
	175	int zpci_dma_init(void);
	176	void zpci_dma_exit(void);
	177
d0b08853 JG	178	/* FMB */
	179	int zpci_fmb_enable_device(struct zpci_dev *);
	180	int zpci_fmb_disable_device(struct zpci_dev *);
	181
	182	/* Debug */
	183	int zpci_debug_init(void);
	184	void zpci_debug_exit(void);
	185	void zpci_debug_init_device(struct zpci_dev *);
	186	void zpci_debug_exit_device(struct zpci_dev *);
	187	void zpci_debug_info(struct zpci_dev , struct seq_file );
	188
cd248341	189	#endif