[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);

#define ZPCI_MSI_VEC_BITS	11
#define ZPCI_MSI_VEC_MAX	(1 << ZPCI_MSI_VEC_BITS)
#define ZPCI_MSI_VEC_MASK	(ZPCI_MSI_VEC_MAX - 1)

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		pchid;		/* physical channel ID */
	u8		pfgid;		/* function group ID */
	u16		domain;

	/* IRQ stuff */
	u64		msi_addr;	/* MSI address */
	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;
}

/* -----------------------------------------------------------------------------
  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);

/* sysfs */
int zpci_sysfs_add_device(struct device *);
void zpci_sysfs_remove_device(struct device *);

/* 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
5d0d8f43 MS	53	#define ZPCI_MSI_VEC_BITS 11
	54	#define ZPCI_MSI_VEC_MAX (1 << ZPCI_MSI_VEC_BITS)
	55	#define ZPCI_MSI_VEC_MASK (ZPCI_MSI_VEC_MAX - 1)
9a4da8a5	56
cd248341 JG	57	enum zpci_state {
	58	ZPCI_FN_STATE_RESERVED,
	59	ZPCI_FN_STATE_STANDBY,
	60	ZPCI_FN_STATE_CONFIGURED,
	61	ZPCI_FN_STATE_ONLINE,
	62	NR_ZPCI_FN_STATES,
	63	};
	64
	65	struct zpci_bar_struct {
7a572a3a	66	struct resource res; / bus resource */
cd248341	67	u32 val; /* bar start & 3 flag bits */
cd248341	68	u16 map_idx; /* index into bar mapping array */
7a572a3a	69	u8 size; /* order 2 exponent */
cd248341 JG	70	};
	71
	72	/* Private data per function */
	73	struct zpci_dev {
	74	struct pci_dev *pdev;
	75	struct pci_bus *bus;
	76	struct list_head entry; /* list of all zpci_devices, needed for hotplug, etc. */
	77
	78	enum zpci_state state;
	79	u32 fid; /* function ID, used by sclp */
	80	u32 fh; /* function handle, used by insn's */
	81	u16 pchid; /* physical channel ID */
	82	u8 pfgid; /* function group ID */
	83	u16 domain;
	84
9a4da8a5 JG	85	/* IRQ stuff */
9a4da8a5 JG	86	u64 msi_addr; /* MSI address */
5d0d8f43	87	struct airq_iv aibv; / adapter interrupt bit vector */
9a4da8a5 JG	88	unsigned int aisb; /* number of the summary bit */
9a4da8a5 JG	89
828b35f6 JG	90	/* DMA stuff */
	91	unsigned long *dma_table;
	92	spinlock_t dma_table_lock;
	93	int tlb_refresh;
	94
	95	spinlock_t iommu_bitmap_lock;
	96	unsigned long *iommu_bitmap;
	97	unsigned long iommu_size;
	98	unsigned long iommu_pages;
	99	unsigned int next_bit;
	100
7a572a3a	101	char res_name[16];
cd248341 JG	102	struct zpci_bar_struct bars[PCI_BAR_COUNT];
cd248341 JG	103
828b35f6 JG	104	u64 start_dma; /* Start of available DMA addresses */
	105	u64 end_dma; /* End of available DMA addresses */
	106	u64 dma_mask; /* DMA address space mask */
	107
d0b08853 JG	108	/* Function measurement block */
	109	struct zpci_fmb *fmb;
	110	u16 fmb_update; /* update interval */
	111
cd248341	112	enum pci_bus_speed max_bus_speed;
d0b08853 JG	113
	114	struct dentry *debugfs_dev;
	115	struct dentry *debugfs_perf;
cd248341 JG	116	};
	117
	118	static inline bool zdev_enabled(struct zpci_dev *zdev)
	119	{
	120	return (zdev->fh & (1UL << 31)) ? true : false;
	121	}
	122
	123	/* -----------------------------------------------------------------------------
	124	Prototypes
	125	----------------------------------------------------------------------------- */
	126	/* Base stuff */
cd248341 JG	127	int zpci_create_device(struct zpci_dev *);
cd248341 JG	128	int zpci_enable_device(struct zpci_dev *);
cb65a669	129	int zpci_disable_device(struct zpci_dev *);
cd248341	130	void zpci_stop_device(struct zpci_dev *);
828b35f6 JG	131	int zpci_register_ioat(struct zpci_dev *, u8, u64, u64, u64);
828b35f6 JG	132	int zpci_unregister_ioat(struct zpci_dev *, u8);
cd248341	133
a755a45d	134	/* CLP */
1d578966 SO	135	int clp_scan_pci_devices(void);
1d578966 SO	136	int clp_rescan_pci_devices(void);
57b5918c	137	int clp_rescan_pci_devices_simple(void);
a755a45d JG	138	int clp_add_pci_device(u32, u32, int);
	139	int clp_enable_fh(struct zpci_dev *, u8);
	140	int clp_disable_fh(struct zpci_dev *);
	141
9a17e972	142	#ifdef CONFIG_PCI
cbc0dd1f JG	143	/* Error handling and recovery */
	144	void zpci_event_error(void *);
	145	void zpci_event_availability(void *);
57b5918c	146	void zpci_rescan(void);
aa3b7c29	147	bool zpci_is_enabled(void);
9a17e972 SO	148	#else /* CONFIG_PCI */
	149	static inline void zpci_event_error(void *e) {}
	150	static inline void zpci_event_availability(void *e) {}
57b5918c	151	static inline void zpci_rescan(void) {}
9a17e972	152	#endif /* CONFIG_PCI */
cbc0dd1f	153
67f43f38 SO	154	#ifdef CONFIG_HOTPLUG_PCI_S390
	155	int zpci_init_slot(struct zpci_dev *);
	156	void zpci_exit_slot(struct zpci_dev *);
	157	#else /* CONFIG_HOTPLUG_PCI_S390 */
	158	static inline int zpci_init_slot(struct zpci_dev *zdev)
	159	{
	160	return 0;
	161	}
	162	static inline void zpci_exit_slot(struct zpci_dev *zdev) {}
	163	#endif /* CONFIG_HOTPLUG_PCI_S390 */
	164
cd248341 JG	165	/* Helpers */
	166	struct zpci_dev get_zdev(struct pci_dev );
	167	struct zpci_dev *get_zdev_by_fid(u32);
cd248341	168
1e8da956 JG	169	/* sysfs */
	170	int zpci_sysfs_add_device(struct device *);
	171	void zpci_sysfs_remove_device(struct device *);
	172
828b35f6 JG	173	/* DMA */
	174	int zpci_dma_init(void);
	175	void zpci_dma_exit(void);
	176
d0b08853 JG	177	/* FMB */
	178	int zpci_fmb_enable_device(struct zpci_dev *);
	179	int zpci_fmb_disable_device(struct zpci_dev *);
	180
	181	/* Debug */
	182	int zpci_debug_init(void);
	183	void zpci_debug_exit(void);
	184	void zpci_debug_init_device(struct zpci_dev *);
	185	void zpci_debug_exit_device(struct zpci_dev *);
	186	void zpci_debug_info(struct zpci_dev , struct seq_file );
	187
cd248341	188	#endif