[mirror_ubuntu-eoan-kernel.git] / arch / powerpc / platforms / powernv / pci.h

#ifndef __POWERNV_PCI_H
#define __POWERNV_PCI_H

struct pci_dn;

enum pnv_phb_type {
	PNV_PHB_P5IOC2	= 0,
	PNV_PHB_IODA1	= 1,
	PNV_PHB_IODA2	= 2,
};

/* Precise PHB model for error management */
enum pnv_phb_model {
	PNV_PHB_MODEL_UNKNOWN,
	PNV_PHB_MODEL_P5IOC2,
	PNV_PHB_MODEL_P7IOC,
	PNV_PHB_MODEL_PHB3,
};

#define PNV_PCI_DIAG_BUF_SIZE	8192
#define PNV_IODA_PE_DEV		(1 << 0)	/* PE has single PCI device	*/
#define PNV_IODA_PE_BUS		(1 << 1)	/* PE has primary PCI bus	*/
#define PNV_IODA_PE_BUS_ALL	(1 << 2)	/* PE has subordinate buses	*/
#define PNV_IODA_PE_MASTER	(1 << 3)	/* Master PE in compound case	*/
#define PNV_IODA_PE_SLAVE	(1 << 4)	/* Slave PE in compound case	*/

/* Data associated with a PE, including IOMMU tracking etc.. */
struct pnv_phb;
struct pnv_ioda_pe {
	unsigned long		flags;
	struct pnv_phb		*phb;

	/* A PE can be associated with a single device or an
	 * entire bus (& children). In the former case, pdev
	 * is populated, in the later case, pbus is.
	 */
	struct pci_dev		*pdev;
	struct pci_bus		*pbus;

	/* Effective RID (device RID for a device PE and base bus
	 * RID with devfn 0 for a bus PE)
	 */
	unsigned int		rid;

	/* PE number */
	unsigned int		pe_number;

	/* "Weight" assigned to the PE for the sake of DMA resource
	 * allocations
	 */
	unsigned int		dma_weight;

	/* "Base" iommu table, ie, 4K TCEs, 32-bit DMA */
	int			tce32_seg;
	int			tce32_segcount;
	struct iommu_table	tce32_table;
	phys_addr_t		tce_inval_reg_phys;

	/* 64-bit TCE bypass region */
	bool			tce_bypass_enabled;
	uint64_t		tce_bypass_base;

	/* MSIs. MVE index is identical for for 32 and 64 bit MSI
	 * and -1 if not supported. (It's actually identical to the
	 * PE number)
	 */
	int			mve_number;

	/* PEs in compound case */
	struct pnv_ioda_pe	*master;
	struct list_head	slaves;

	/* Link in list of PE#s */
	struct list_head	dma_link;
	struct list_head	list;
};

/* IOC dependent EEH operations */
#ifdef CONFIG_EEH
struct pnv_eeh_ops {
	int (*set_option)(struct eeh_pe *pe, int option);
	int (*get_state)(struct eeh_pe *pe);
	int (*reset)(struct eeh_pe *pe, int option);
	int (*configure_bridge)(struct eeh_pe *pe);
	int (*next_error)(struct eeh_pe **pe);
};
#endif /* CONFIG_EEH */

#define PNV_PHB_FLAG_EEH	(1 << 0)

struct pnv_phb {
	struct pci_controller	*hose;
	enum pnv_phb_type	type;
	enum pnv_phb_model	model;
	u64			hub_id;
	u64			opal_id;
	int			flags;
	void __iomem		*regs;
	int			initialized;
	spinlock_t		lock;

#ifdef CONFIG_EEH
	struct pnv_eeh_ops	*eeh_ops;
#endif

#ifdef CONFIG_DEBUG_FS
	int			has_dbgfs;
	struct dentry		*dbgfs;
#endif

#ifdef CONFIG_PCI_MSI
	unsigned int		msi_base;
	unsigned int		msi32_support;
	struct msi_bitmap	msi_bmp;
#endif
	int (*msi_setup)(struct pnv_phb *phb, struct pci_dev *dev,
			 unsigned int hwirq, unsigned int virq,
			 unsigned int is_64, struct msi_msg *msg);
	void (*dma_dev_setup)(struct pnv_phb *phb, struct pci_dev *pdev);
	int (*dma_set_mask)(struct pnv_phb *phb, struct pci_dev *pdev,
			    u64 dma_mask);
	u64 (*dma_get_required_mask)(struct pnv_phb *phb,
				     struct pci_dev *pdev);
	void (*fixup_phb)(struct pci_controller *hose);
	u32 (*bdfn_to_pe)(struct pnv_phb *phb, struct pci_bus *bus, u32 devfn);
	void (*shutdown)(struct pnv_phb *phb);
	int (*init_m64)(struct pnv_phb *phb);
	void (*reserve_m64_pe)(struct pnv_phb *phb);
	int (*pick_m64_pe)(struct pnv_phb *phb, struct pci_bus *bus, int all);
	int (*get_pe_state)(struct pnv_phb *phb, int pe_no);
	void (*freeze_pe)(struct pnv_phb *phb, int pe_no);
	int (*unfreeze_pe)(struct pnv_phb *phb, int pe_no, int opt);

	union {
		struct {
			struct iommu_table iommu_table;
		} p5ioc2;

		struct {
			/* Global bridge info */
			unsigned int		total_pe;
			unsigned int		reserved_pe;

			/* 32-bit MMIO window */
			unsigned int		m32_size;
			unsigned int		m32_segsize;
			unsigned int		m32_pci_base;

			/* 64-bit MMIO window */
			unsigned int		m64_bar_idx;
			unsigned long		m64_size;
			unsigned long		m64_segsize;
			unsigned long		m64_base;
			unsigned long		m64_bar_alloc;

			/* IO ports */
			unsigned int		io_size;
			unsigned int		io_segsize;
			unsigned int		io_pci_base;

			/* PE allocation bitmap */
			unsigned long		*pe_alloc;

			/* M32 & IO segment maps */
			unsigned int		*m32_segmap;
			unsigned int		*io_segmap;
			struct pnv_ioda_pe	*pe_array;

			/* IRQ chip */
			int			irq_chip_init;
			struct irq_chip		irq_chip;

			/* Sorted list of used PE's based
			 * on the sequence of creation
			 */
			struct list_head	pe_list;

			/* Reverse map of PEs, will have to extend if
			 * we are to support more than 256 PEs, indexed
			 * bus { bus, devfn }
			 */
			unsigned char		pe_rmap[0x10000];

			/* 32-bit TCE tables allocation */
			unsigned long		tce32_count;

			/* Total "weight" for the sake of DMA resources
			 * allocation
			 */
			unsigned int		dma_weight;
			unsigned int		dma_pe_count;

			/* Sorted list of used PE's, sorted at
			 * boot for resource allocation purposes
			 */
			struct list_head	pe_dma_list;
		} ioda;
	};

	/* PHB and hub status structure */
	union {
		unsigned char			blob[PNV_PCI_DIAG_BUF_SIZE];
		struct OpalIoP7IOCPhbErrorData	p7ioc;
		struct OpalIoPhb3ErrorData	phb3;
		struct OpalIoP7IOCErrorData 	hub_diag;
	} diag;

};

extern struct pci_ops pnv_pci_ops;
#ifdef CONFIG_EEH
extern struct pnv_eeh_ops ioda_eeh_ops;
#endif

void pnv_pci_dump_phb_diag_data(struct pci_controller *hose,
				unsigned char *log_buff);
int pnv_pci_cfg_read(struct device_node *dn,
		     int where, int size, u32 *val);
int pnv_pci_cfg_write(struct device_node *dn,
		      int where, int size, u32 val);
extern void pnv_pci_setup_iommu_table(struct iommu_table *tbl,
				      void *tce_mem, u64 tce_size,
				      u64 dma_offset, unsigned page_shift);
extern void pnv_pci_init_p5ioc2_hub(struct device_node *np);
extern void pnv_pci_init_ioda_hub(struct device_node *np);
extern void pnv_pci_init_ioda2_phb(struct device_node *np);
extern void pnv_pci_ioda_tce_invalidate(struct iommu_table *tbl,
					__be64 *startp, __be64 *endp, bool rm);
extern void pnv_pci_reset_secondary_bus(struct pci_dev *dev);
extern int ioda_eeh_phb_reset(struct pci_controller *hose, int option);

#endif /* __POWERNV_PCI_H */
Commit	Line	Data
61305a96 BH	1	#ifndef __POWERNV_PCI_H
	2	#define __POWERNV_PCI_H
	3
	4	struct pci_dn;
	5
	6	enum pnv_phb_type {
aa0c033f GS	7	PNV_PHB_P5IOC2 = 0,
	8	PNV_PHB_IODA1 = 1,
	9	PNV_PHB_IODA2 = 2,
61305a96 BH	10	};
61305a96 BH	11
cee72d5b BH	12	/* Precise PHB model for error management */
	13	enum pnv_phb_model {
	14	PNV_PHB_MODEL_UNKNOWN,
	15	PNV_PHB_MODEL_P5IOC2,
	16	PNV_PHB_MODEL_P7IOC,
aa0c033f	17	PNV_PHB_MODEL_PHB3,
cee72d5b BH	18	};
cee72d5b BH	19
5c9d6d75	20	#define PNV_PCI_DIAG_BUF_SIZE 8192
7ebdf956 GS	21	#define PNV_IODA_PE_DEV (1 << 0) /* PE has single PCI device */
	22	#define PNV_IODA_PE_BUS (1 << 1) /* PE has primary PCI bus */
	23	#define PNV_IODA_PE_BUS_ALL (1 << 2) /* PE has subordinate buses */
262af557 GC	24	#define PNV_IODA_PE_MASTER (1 << 3) /* Master PE in compound case */
262af557 GC	25	#define PNV_IODA_PE_SLAVE (1 << 4) /* Slave PE in compound case */
cee72d5b	26
184cd4a3	27	/* Data associated with a PE, including IOMMU tracking etc.. */
4cce9550	28	struct pnv_phb;
184cd4a3	29	struct pnv_ioda_pe {
7ebdf956	30	unsigned long flags;
4cce9550	31	struct pnv_phb *phb;
7ebdf956	32
184cd4a3 BH	33	/* A PE can be associated with a single device or an
	34	* entire bus (& children). In the former case, pdev
	35	* is populated, in the later case, pbus is.
	36	*/
	37	struct pci_dev *pdev;
	38	struct pci_bus *pbus;
	39
	40	/* Effective RID (device RID for a device PE and base bus
	41	* RID with devfn 0 for a bus PE)
	42	*/
	43	unsigned int rid;
	44
	45	/* PE number */
	46	unsigned int pe_number;
	47
	48	/* "Weight" assigned to the PE for the sake of DMA resource
	49	* allocations
	50	*/
	51	unsigned int dma_weight;
	52
184cd4a3 BH	53	/* "Base" iommu table, ie, 4K TCEs, 32-bit DMA */
	54	int tce32_seg;
	55	int tce32_segcount;
	56	struct iommu_table tce32_table;
8e0a1611	57	phys_addr_t tce_inval_reg_phys;
184cd4a3	58
cd15b048 BH	59	/* 64-bit TCE bypass region */
	60	bool tce_bypass_enabled;
	61	uint64_t tce_bypass_base;
184cd4a3 BH	62
	63	/* MSIs. MVE index is identical for for 32 and 64 bit MSI
	64	* and -1 if not supported. (It's actually identical to the
	65	* PE number)
	66	*/
	67	int mve_number;
	68
262af557 GC	69	/* PEs in compound case */
	70	struct pnv_ioda_pe *master;
	71	struct list_head slaves;
	72
184cd4a3	73	/* Link in list of PE#s */
7ebdf956 GS	74	struct list_head dma_link;
7ebdf956 GS	75	struct list_head list;
184cd4a3 BH	76	};
184cd4a3 BH	77
8747f363 GS	78	/* IOC dependent EEH operations */
	79	#ifdef CONFIG_EEH
	80	struct pnv_eeh_ops {
8747f363 GS	81	int (set_option)(struct eeh_pe pe, int option);
	82	int (get_state)(struct eeh_pe pe);
	83	int (reset)(struct eeh_pe pe, int option);
8747f363 GS	84	int (configure_bridge)(struct eeh_pe pe);
	85	int (next_error)(struct eeh_pe *pe);
	86	};
	87	#endif /* CONFIG_EEH */
	88
f5bc6b70 GS	89	#define PNV_PHB_FLAG_EEH (1 << 0)
f5bc6b70 GS	90
61305a96 BH	91	struct pnv_phb {
	92	struct pci_controller *hose;
	93	enum pnv_phb_type type;
cee72d5b	94	enum pnv_phb_model model;
8747f363	95	u64 hub_id;
61305a96	96	u64 opal_id;
f5bc6b70	97	int flags;
61305a96	98	void __iomem *regs;
db1266c8	99	int initialized;
61305a96 BH	100	spinlock_t lock;
61305a96 BH	101
8747f363 GS	102	#ifdef CONFIG_EEH
8747f363 GS	103	struct pnv_eeh_ops *eeh_ops;
8747f363 GS	104	#endif
8747f363 GS	105
37c367f2	106	#ifdef CONFIG_DEBUG_FS
7f52a526	107	int has_dbgfs;
37c367f2 GS	108	struct dentry *dbgfs;
	109	#endif
	110
c1a2562a	111	#ifdef CONFIG_PCI_MSI
c1a2562a	112	unsigned int msi_base;
c1a2562a	113	unsigned int msi32_support;
fb1b55d6	114	struct msi_bitmap msi_bmp;
c1a2562a BH	115	#endif
c1a2562a BH	116	int (msi_setup)(struct pnv_phb phb, struct pci_dev *dev,
137436c9 GS	117	unsigned int hwirq, unsigned int virq,
137436c9 GS	118	unsigned int is_64, struct msi_msg *msg);
61305a96	119	void (dma_dev_setup)(struct pnv_phb phb, struct pci_dev *pdev);
cd15b048 BH	120	int (dma_set_mask)(struct pnv_phb phb, struct pci_dev *pdev,
cd15b048 BH	121	u64 dma_mask);
fe7e85c6 GS	122	u64 (dma_get_required_mask)(struct pnv_phb phb,
fe7e85c6 GS	123	struct pci_dev *pdev);
61305a96 BH	124	void (fixup_phb)(struct pci_controller hose);
61305a96 BH	125	u32 (bdfn_to_pe)(struct pnv_phb phb, struct pci_bus *bus, u32 devfn);
73ed148a	126	void (shutdown)(struct pnv_phb phb);
262af557	127	int (init_m64)(struct pnv_phb phb);
5ef73567	128	void (reserve_m64_pe)(struct pnv_phb phb);
262af557	129	int (pick_m64_pe)(struct pnv_phb phb, struct pci_bus *bus, int all);
49dec922 GS	130	int (get_pe_state)(struct pnv_phb phb, int pe_no);
	131	void (freeze_pe)(struct pnv_phb phb, int pe_no);
	132	int (unfreeze_pe)(struct pnv_phb phb, int pe_no, int opt);
61305a96 BH	133
	134	union {
	135	struct {
	136	struct iommu_table iommu_table;
	137	} p5ioc2;
184cd4a3 BH	138
	139	struct {
	140	/* Global bridge info */
	141	unsigned int total_pe;
36954dc7	142	unsigned int reserved_pe;
262af557 GC	143
262af557 GC	144	/* 32-bit MMIO window */
184cd4a3 BH	145	unsigned int m32_size;
	146	unsigned int m32_segsize;
	147	unsigned int m32_pci_base;
262af557 GC	148
	149	/* 64-bit MMIO window */
	150	unsigned int m64_bar_idx;
	151	unsigned long m64_size;
	152	unsigned long m64_segsize;
	153	unsigned long m64_base;
	154	unsigned long m64_bar_alloc;
	155
	156	/* IO ports */
184cd4a3 BH	157	unsigned int io_size;
	158	unsigned int io_segsize;
	159	unsigned int io_pci_base;
	160
	161	/* PE allocation bitmap */
	162	unsigned long *pe_alloc;
	163
	164	/* M32 & IO segment maps */
	165	unsigned int *m32_segmap;
	166	unsigned int *io_segmap;
	167	struct pnv_ioda_pe *pe_array;
	168
137436c9 GS	169	/* IRQ chip */
	170	int irq_chip_init;
	171	struct irq_chip irq_chip;
	172
7ebdf956 GS	173	/* Sorted list of used PE's based
	174	* on the sequence of creation
	175	*/
	176	struct list_head pe_list;
	177
184cd4a3 BH	178	/* Reverse map of PEs, will have to extend if
	179	* we are to support more than 256 PEs, indexed
	180	* bus { bus, devfn }
	181	*/
	182	unsigned char pe_rmap[0x10000];
	183
	184	/* 32-bit TCE tables allocation */
	185	unsigned long tce32_count;
	186
	187	/* Total "weight" for the sake of DMA resources
	188	* allocation
	189	*/
	190	unsigned int dma_weight;
	191	unsigned int dma_pe_count;
	192
	193	/* Sorted list of used PE's, sorted at
	194	* boot for resource allocation purposes
	195	*/
7ebdf956	196	struct list_head pe_dma_list;
184cd4a3	197	} ioda;
61305a96	198	};
cee72d5b	199
ca1de5de	200	/* PHB and hub status structure */
cee72d5b BH	201	union {
	202	unsigned char blob[PNV_PCI_DIAG_BUF_SIZE];
	203	struct OpalIoP7IOCPhbErrorData p7ioc;
93aef2a7	204	struct OpalIoPhb3ErrorData phb3;
ca1de5de	205	struct OpalIoP7IOCErrorData hub_diag;
cee72d5b	206	} diag;
ca1de5de	207
61305a96 BH	208	};
	209
	210	extern struct pci_ops pnv_pci_ops;
8747f363 GS	211	#ifdef CONFIG_EEH
	212	extern struct pnv_eeh_ops ioda_eeh_ops;
	213	#endif
61305a96	214
93aef2a7 GS	215	void pnv_pci_dump_phb_diag_data(struct pci_controller *hose,
93aef2a7 GS	216	unsigned char *log_buff);
9bf41be6 GS	217	int pnv_pci_cfg_read(struct device_node *dn,
	218	int where, int size, u32 *val);
	219	int pnv_pci_cfg_write(struct device_node *dn,
	220	int where, int size, u32 val);
61305a96 BH	221	extern void pnv_pci_setup_iommu_table(struct iommu_table *tbl,
61305a96 BH	222	void *tce_mem, u64 tce_size,
8fa5d454	223	u64 dma_offset, unsigned page_shift);
61305a96	224	extern void pnv_pci_init_p5ioc2_hub(struct device_node *np);
184cd4a3	225	extern void pnv_pci_init_ioda_hub(struct device_node *np);
aa0c033f	226	extern void pnv_pci_init_ioda2_phb(struct device_node *np);
4cce9550	227	extern void pnv_pci_ioda_tce_invalidate(struct iommu_table *tbl,
3ad26e5c	228	__be64 startp, __be64 endp, bool rm);
d92a208d	229	extern void pnv_pci_reset_secondary_bus(struct pci_dev *dev);
361f2a2a	230	extern int ioda_eeh_phb_reset(struct pci_controller *hose, int option);
73ed148a	231
61305a96	232	#endif /* __POWERNV_PCI_H */