[net-next-2.6.git] / arch / sparc / kernel / pci_impl.h

/* pci_impl.h: Helper definitions for PCI controller support.
 *
 * Copyright (C) 1999, 2007 David S. Miller (davem@davemloft.net)
 */

#ifndef PCI_IMPL_H
#define PCI_IMPL_H

#include <linux/types.h>
#include <linux/spinlock.h>
#include <linux/pci.h>
#include <linux/msi.h>
#include <linux/of_device.h>
#include <asm/io.h>
#include <asm/prom.h>
#include <asm/iommu.h>

/* The abstraction used here is that there are PCI controllers,
 * each with one (Sabre) or two (PSYCHO/SCHIZO) PCI bus modules
 * underneath.  Each PCI bus module uses an IOMMU (shared by both
 * PBMs of a controller, or per-PBM), and if a streaming buffer
 * is present, each PCI bus module has it's own. (ie. the IOMMU
 * might be shared between PBMs, the STC is never shared)
 * Furthermore, each PCI bus module controls it's own autonomous
 * PCI bus.
 */

#define PCI_STC_FLUSHFLAG_INIT(STC) \
	(*((STC)->strbuf_flushflag) = 0UL)
#define PCI_STC_FLUSHFLAG_SET(STC) \
	(*((STC)->strbuf_flushflag) != 0UL)

#ifdef CONFIG_PCI_MSI
struct pci_pbm_info;
struct sparc64_msiq_ops {
	int (*get_head)(struct pci_pbm_info *pbm, unsigned long msiqid,
			unsigned long *head);
	int (*dequeue_msi)(struct pci_pbm_info *pbm, unsigned long msiqid,
			   unsigned long *head, unsigned long *msi);
	int (*set_head)(struct pci_pbm_info *pbm, unsigned long msiqid,
			unsigned long head);
	int (*msi_setup)(struct pci_pbm_info *pbm, unsigned long msiqid,
			 unsigned long msi, int is_msi64);
	int (*msi_teardown)(struct pci_pbm_info *pbm, unsigned long msi);
	int (*msiq_alloc)(struct pci_pbm_info *pbm);
	void (*msiq_free)(struct pci_pbm_info *pbm);
	int (*msiq_build_irq)(struct pci_pbm_info *pbm, unsigned long msiqid,
			      unsigned long devino);
};

extern void sparc64_pbm_msi_init(struct pci_pbm_info *pbm,
				 const struct sparc64_msiq_ops *ops);

struct sparc64_msiq_cookie {
	struct pci_pbm_info *pbm;
	unsigned long msiqid;
};
#endif

struct pci_pbm_info {
	struct pci_pbm_info		*next;
	struct pci_pbm_info		*sibling;
	int				index;

	/* Physical address base of controller registers. */
	unsigned long			controller_regs;

	/* Physical address base of PBM registers. */
	unsigned long			pbm_regs;

	/* Physical address of DMA sync register, if any.  */
	unsigned long			sync_reg;

	/* Opaque 32-bit system bus Port ID. */
	u32				portid;

	/* Opaque 32-bit handle used for hypervisor calls.  */
	u32				devhandle;

	/* Chipset version information. */
	int				chip_type;
#define PBM_CHIP_TYPE_SABRE		1
#define PBM_CHIP_TYPE_PSYCHO		2
#define PBM_CHIP_TYPE_SCHIZO		3
#define PBM_CHIP_TYPE_SCHIZO_PLUS	4
#define PBM_CHIP_TYPE_TOMATILLO		5
	int				chip_version;
	int				chip_revision;

	/* Name used for top-level resources. */
	char				*name;

	/* OBP specific information. */
	struct platform_device		*op;
	u64				ino_bitmap;

	/* PBM I/O and Memory space resources. */
	struct resource			io_space;
	struct resource			mem_space;

	/* Base of PCI Config space, can be per-PBM or shared. */
	unsigned long			config_space;

	/* This will be 12 on PCI-E controllers, 8 elsewhere.  */
	unsigned long			config_space_reg_bits;

	unsigned long			pci_afsr;
	unsigned long			pci_afar;
	unsigned long			pci_csr;

	/* State of 66MHz capabilities on this PBM. */
	int				is_66mhz_capable;
	int				all_devs_66mhz;

#ifdef CONFIG_PCI_MSI
	/* MSI info.  */
	u32				msiq_num;
	u32				msiq_ent_count;
	u32				msiq_first;
	u32				msiq_first_devino;
	u32				msiq_rotor;
	struct sparc64_msiq_cookie	*msiq_irq_cookies;
	u32				msi_num;
	u32				msi_first;
	u32				msi_data_mask;
	u32				msix_data_width;
	u64				msi32_start;
	u64				msi64_start;
	u32				msi32_len;
	u32				msi64_len;
	void				*msi_queues;
	unsigned long			*msi_bitmap;
	unsigned int			*msi_irq_table;
	int (*setup_msi_irq)(unsigned int *virt_irq_p, struct pci_dev *pdev,
			     struct msi_desc *entry);
	void (*teardown_msi_irq)(unsigned int virt_irq, struct pci_dev *pdev);
	const struct sparc64_msiq_ops	*msi_ops;
#endif /* !(CONFIG_PCI_MSI) */

	/* This PBM's streaming buffer. */
	struct strbuf			stc;

	/* IOMMU state, potentially shared by both PBM segments. */
	struct iommu			*iommu;

	/* Now things for the actual PCI bus probes. */
	unsigned int			pci_first_busno;
	unsigned int			pci_last_busno;
	struct pci_bus			*pci_bus;
	struct pci_ops			*pci_ops;

	int				numa_node;
};

extern struct pci_pbm_info *pci_pbm_root;

extern int pci_num_pbms;

/* PCI bus scanning and fixup support. */
extern void pci_get_pbm_props(struct pci_pbm_info *pbm);
extern struct pci_bus *pci_scan_one_pbm(struct pci_pbm_info *pbm,
					struct device *parent);
extern void pci_determine_mem_io_space(struct pci_pbm_info *pbm);

/* Error reporting support. */
extern void pci_scan_for_target_abort(struct pci_pbm_info *, struct pci_bus *);
extern void pci_scan_for_master_abort(struct pci_pbm_info *, struct pci_bus *);
extern void pci_scan_for_parity_error(struct pci_pbm_info *, struct pci_bus *);

/* Configuration space access. */
extern void pci_config_read8(u8 *addr, u8 *ret);
extern void pci_config_read16(u16 *addr, u16 *ret);
extern void pci_config_read32(u32 *addr, u32 *ret);
extern void pci_config_write8(u8 *addr, u8 val);
extern void pci_config_write16(u16 *addr, u16 val);
extern void pci_config_write32(u32 *addr, u32 val);

extern struct pci_ops sun4u_pci_ops;
extern struct pci_ops sun4v_pci_ops;

extern volatile int pci_poke_in_progress;
extern volatile int pci_poke_cpu;
extern volatile int pci_poke_faulted;

#endif /* !(PCI_IMPL_H) */
Commit	Line	Data
9fd8b647	1	/* pci_impl.h: Helper definitions for PCI controller support.
1da177e4	2	*
9fd8b647	3	* Copyright (C) 1999, 2007 David S. Miller (davem@davemloft.net)
1da177e4 LT	4	*/
	5
	6	#ifndef PCI_IMPL_H
	7	#define PCI_IMPL_H
	8
	9	#include <linux/types.h>
	10	#include <linux/spinlock.h>
c57c2ffb DM	11	#include <linux/pci.h>
c57c2ffb DM	12	#include <linux/msi.h>
22fecbae	13	#include <linux/of_device.h>
1da177e4	14	#include <asm/io.h>
de8d28b1	15	#include <asm/prom.h>
c57c2ffb DM	16	#include <asm/iommu.h>
	17
	18	/* The abstraction used here is that there are PCI controllers,
	19	* each with one (Sabre) or two (PSYCHO/SCHIZO) PCI bus modules
	20	* underneath. Each PCI bus module uses an IOMMU (shared by both
	21	* PBMs of a controller, or per-PBM), and if a streaming buffer
	22	* is present, each PCI bus module has it's own. (ie. the IOMMU
	23	* might be shared between PBMs, the STC is never shared)
	24	* Furthermore, each PCI bus module controls it's own autonomous
	25	* PCI bus.
	26	*/
	27
	28	#define PCI_STC_FLUSHFLAG_INIT(STC) \
	29	(*((STC)->strbuf_flushflag) = 0UL)
	30	#define PCI_STC_FLUSHFLAG_SET(STC) \
	31	(*((STC)->strbuf_flushflag) != 0UL)
	32
759f89e0 DM	33	#ifdef CONFIG_PCI_MSI
	34	struct pci_pbm_info;
	35	struct sparc64_msiq_ops {
	36	int (get_head)(struct pci_pbm_info pbm, unsigned long msiqid,
	37	unsigned long *head);
	38	int (dequeue_msi)(struct pci_pbm_info pbm, unsigned long msiqid,
	39	unsigned long head, unsigned long msi);
	40	int (set_head)(struct pci_pbm_info pbm, unsigned long msiqid,
	41	unsigned long head);
	42	int (msi_setup)(struct pci_pbm_info pbm, unsigned long msiqid,
	43	unsigned long msi, int is_msi64);
	44	int (msi_teardown)(struct pci_pbm_info pbm, unsigned long msi);
	45	int (msiq_alloc)(struct pci_pbm_info pbm);
	46	void (msiq_free)(struct pci_pbm_info pbm);
	47	int (msiq_build_irq)(struct pci_pbm_info pbm, unsigned long msiqid,
	48	unsigned long devino);
	49	};
	50
	51	extern void sparc64_pbm_msi_init(struct pci_pbm_info *pbm,
	52	const struct sparc64_msiq_ops *ops);
	53
	54	struct sparc64_msiq_cookie {
	55	struct pci_pbm_info *pbm;
	56	unsigned long msiqid;
	57	};
	58	#endif
	59
c57c2ffb DM	60	struct pci_pbm_info {
c57c2ffb DM	61	struct pci_pbm_info *next;
d3ae4b5b	62	struct pci_pbm_info *sibling;
c57c2ffb DM	63	int index;
c57c2ffb DM	64
c57c2ffb DM	65	/* Physical address base of controller registers. */
	66	unsigned long controller_regs;
	67
	68	/* Physical address base of PBM registers. */
	69	unsigned long pbm_regs;
	70
	71	/* Physical address of DMA sync register, if any. */
	72	unsigned long sync_reg;
	73
	74	/* Opaque 32-bit system bus Port ID. */
	75	u32 portid;
	76
	77	/* Opaque 32-bit handle used for hypervisor calls. */
	78	u32 devhandle;
	79
	80	/* Chipset version information. */
	81	int chip_type;
	82	#define PBM_CHIP_TYPE_SABRE 1
	83	#define PBM_CHIP_TYPE_PSYCHO 2
	84	#define PBM_CHIP_TYPE_SCHIZO 3
	85	#define PBM_CHIP_TYPE_SCHIZO_PLUS 4
	86	#define PBM_CHIP_TYPE_TOMATILLO 5
	87	int chip_version;
	88	int chip_revision;
	89
	90	/* Name used for top-level resources. */
	91	char *name;
	92
	93	/* OBP specific information. */
cd4cd730	94	struct platform_device *op;
c57c2ffb DM	95	u64 ino_bitmap;
	96
	97	/* PBM I/O and Memory space resources. */
	98	struct resource io_space;
	99	struct resource mem_space;
	100
	101	/* Base of PCI Config space, can be per-PBM or shared. */
	102	unsigned long config_space;
	103
ca3dd88e DM	104	/* This will be 12 on PCI-E controllers, 8 elsewhere. */
	105	unsigned long config_space_reg_bits;
	106
d3ae4b5b DM	107	unsigned long pci_afsr;
	108	unsigned long pci_afar;
	109	unsigned long pci_csr;
	110
c57c2ffb DM	111	/* State of 66MHz capabilities on this PBM. */
	112	int is_66mhz_capable;
	113	int all_devs_66mhz;
	114
	115	#ifdef CONFIG_PCI_MSI
	116	/* MSI info. */
	117	u32 msiq_num;
	118	u32 msiq_ent_count;
	119	u32 msiq_first;
	120	u32 msiq_first_devino;
759f89e0 DM	121	u32 msiq_rotor;
759f89e0 DM	122	struct sparc64_msiq_cookie *msiq_irq_cookies;
c57c2ffb DM	123	u32 msi_num;
	124	u32 msi_first;
	125	u32 msi_data_mask;
	126	u32 msix_data_width;
	127	u64 msi32_start;
	128	u64 msi64_start;
	129	u32 msi32_len;
	130	u32 msi64_len;
	131	void *msi_queues;
	132	unsigned long *msi_bitmap;
759f89e0	133	unsigned int *msi_irq_table;
c57c2ffb DM	134	int (setup_msi_irq)(unsigned int virt_irq_p, struct pci_dev *pdev,
	135	struct msi_desc *entry);
	136	void (teardown_msi_irq)(unsigned int virt_irq, struct pci_dev pdev);
759f89e0	137	const struct sparc64_msiq_ops *msi_ops;
c57c2ffb DM	138	#endif /* !(CONFIG_PCI_MSI) */
	139
	140	/* This PBM's streaming buffer. */
	141	struct strbuf stc;
	142
	143	/* IOMMU state, potentially shared by both PBM segments. */
	144	struct iommu *iommu;
	145
	146	/* Now things for the actual PCI bus probes. */
	147	unsigned int pci_first_busno;
	148	unsigned int pci_last_busno;
	149	struct pci_bus *pci_bus;
c57c2ffb	150	struct pci_ops *pci_ops;
c1b1a5f1 DM	151
c1b1a5f1 DM	152	int numa_node;
c57c2ffb DM	153	};
c57c2ffb DM	154
34768bc8	155	extern struct pci_pbm_info *pci_pbm_root;
1da177e4	156
6c108f12	157	extern int pci_num_pbms;
1da177e4 LT	158
1da177e4 LT	159	/* PCI bus scanning and fixup support. */
cfa0652c	160	extern void pci_get_pbm_props(struct pci_pbm_info *pbm);
7cc288ad DM	161	extern struct pci_bus pci_scan_one_pbm(struct pci_pbm_info pbm,
7cc288ad DM	162	struct device *parent);
9fd8b647	163	extern void pci_determine_mem_io_space(struct pci_pbm_info *pbm);
1da177e4 LT	164
1da177e4 LT	165	/* Error reporting support. */
6c108f12 DM	166	extern void pci_scan_for_target_abort(struct pci_pbm_info , struct pci_bus );
	167	extern void pci_scan_for_master_abort(struct pci_pbm_info , struct pci_bus );
	168	extern void pci_scan_for_parity_error(struct pci_pbm_info , struct pci_bus );
1da177e4 LT	169
	170	/* Configuration space access. */
	171	extern void pci_config_read8(u8 addr, u8 ret);
	172	extern void pci_config_read16(u16 addr, u16 ret);
	173	extern void pci_config_read32(u32 addr, u32 ret);
	174	extern void pci_config_write8(u8 *addr, u8 val);
	175	extern void pci_config_write16(u16 *addr, u16 val);
	176	extern void pci_config_write32(u32 *addr, u32 val);
	177
ca3dd88e DM	178	extern struct pci_ops sun4u_pci_ops;
	179	extern struct pci_ops sun4v_pci_ops;
	180
77d10d0e DM	181	extern volatile int pci_poke_in_progress;
	182	extern volatile int pci_poke_cpu;
	183	extern volatile int pci_poke_faulted;
	184
1da177e4	185	#endif /* !(PCI_IMPL_H) */