[deliverable/linux.git] / include / asm-sparc / sbus_64.h

/* sbus.h: Defines for the Sun SBus.
 *
 * Copyright (C) 1996, 1999, 2007 David S. Miller (davem@davemloft.net)
 */

#ifndef _SPARC64_SBUS_H
#define _SPARC64_SBUS_H

#include <linux/dma-mapping.h>
#include <linux/ioport.h>

#include <asm/oplib.h>
#include <asm/prom.h>
#include <asm/of_device.h>
#include <asm/iommu.h>
#include <asm/scatterlist.h>

/* We scan which devices are on the SBus using the PROM node device
 * tree.  SBus devices are described in two different ways.  You can
 * either get an absolute address at which to access the device, or
 * you can get a SBus 'slot' number and an offset within that slot.
 */

/* The base address at which to calculate device OBIO addresses. */
#define SUN_SBUS_BVADDR        0x00000000
#define SBUS_OFF_MASK          0x0fffffff

/* These routines are used to calculate device address from slot
 * numbers + offsets, and vice versa.
 */

static inline unsigned long sbus_devaddr(int slotnum, unsigned long offset)
{
  return (unsigned long) (SUN_SBUS_BVADDR+((slotnum)<<28)+(offset));
}

static inline int sbus_dev_slot(unsigned long dev_addr)
{
  return (int) (((dev_addr)-SUN_SBUS_BVADDR)>>28);
}

struct sbus_bus;

/* Linux SBUS device tables */
struct sbus_dev {
	struct of_device	ofdev;
	struct sbus_bus		*bus;
	struct sbus_dev		*next;
	struct sbus_dev		*child;
	struct sbus_dev		*parent;
	int prom_node;
	char prom_name[64];
	int slot;

	struct resource resource[PROMREG_MAX];

	struct linux_prom_registers reg_addrs[PROMREG_MAX];
	int num_registers;

	struct linux_prom_ranges device_ranges[PROMREG_MAX];
	int num_device_ranges;

	unsigned int irqs[4];
	int num_irqs;
};
#define to_sbus_device(d) container_of(d, struct sbus_dev, ofdev.dev)

/* This struct describes the SBus(s) found on this machine. */
struct sbus_bus {
	struct of_device	ofdev;
	struct sbus_dev		*devices;	/* Tree of SBUS devices	*/
	struct sbus_bus		*next;		/* Next SBUS in system	*/
	int			prom_node;      /* OBP node of SBUS	*/
	char			prom_name[64];	/* Usually "sbus" or "sbi" */
	int			clock_freq;

	struct linux_prom_ranges sbus_ranges[PROMREG_MAX];
	int num_sbus_ranges;

	int portid;
};
#define to_sbus(d) container_of(d, struct sbus_bus, ofdev.dev)

extern struct sbus_bus *sbus_root;

/* Device probing routines could find these handy */
#define for_each_sbus(bus) \
        for((bus) = sbus_root; (bus); (bus)=(bus)->next)

#define for_each_sbusdev(device, bus) \
        for((device) = (bus)->devices; (device); (device)=(device)->next)

#define for_all_sbusdev(device, bus) \
	for ((bus) = sbus_root; (bus); (bus) = (bus)->next) \
		for ((device) = (bus)->devices; (device); (device) = (device)->next)

/* Driver DVMA interfaces. */
#define sbus_can_dma_64bit(sdev)	(1)
#define sbus_can_burst64(sdev)		(1)
extern void sbus_set_sbus64(struct sbus_dev *, int);
extern void sbus_fill_device_irq(struct sbus_dev *);

static inline void *sbus_alloc_consistent(struct sbus_dev *sdev , size_t size,
					  dma_addr_t *dma_handle)
{
	return dma_alloc_coherent(&sdev->ofdev.dev, size,
				  dma_handle, GFP_ATOMIC);
}

static inline void sbus_free_consistent(struct sbus_dev *sdev, size_t size,
					void *vaddr, dma_addr_t dma_handle)
{
	return dma_free_coherent(&sdev->ofdev.dev, size, vaddr, dma_handle);
}

#define SBUS_DMA_BIDIRECTIONAL	DMA_BIDIRECTIONAL
#define SBUS_DMA_TODEVICE	DMA_TO_DEVICE
#define SBUS_DMA_FROMDEVICE	DMA_FROM_DEVICE
#define	SBUS_DMA_NONE		DMA_NONE

/* All the rest use streaming mode mappings. */
static inline dma_addr_t sbus_map_single(struct sbus_dev *sdev, void *ptr,
					 size_t size, int direction)
{
	return dma_map_single(&sdev->ofdev.dev, ptr, size,
			      (enum dma_data_direction) direction);
}

static inline void sbus_unmap_single(struct sbus_dev *sdev,
				     dma_addr_t dma_addr, size_t size,
				     int direction)
{
	dma_unmap_single(&sdev->ofdev.dev, dma_addr, size,
			 (enum dma_data_direction) direction);
}

static inline int sbus_map_sg(struct sbus_dev *sdev, struct scatterlist *sg,
			      int nents, int direction)
{
	return dma_map_sg(&sdev->ofdev.dev, sg, nents,
			  (enum dma_data_direction) direction);
}

static inline void sbus_unmap_sg(struct sbus_dev *sdev, struct scatterlist *sg,
				 int nents, int direction)
{
	dma_unmap_sg(&sdev->ofdev.dev, sg, nents,
		     (enum dma_data_direction) direction);
}

/* Finally, allow explicit synchronization of streamable mappings. */
static inline void sbus_dma_sync_single_for_cpu(struct sbus_dev *sdev,
						dma_addr_t dma_handle,
						size_t size, int direction)
{
	dma_sync_single_for_cpu(&sdev->ofdev.dev, dma_handle, size,
				(enum dma_data_direction) direction);
}
#define sbus_dma_sync_single sbus_dma_sync_single_for_cpu

static inline void sbus_dma_sync_single_for_device(struct sbus_dev *sdev,
						   dma_addr_t dma_handle,
						   size_t size, int direction)
{
	/* No flushing needed to sync cpu writes to the device.  */
}

static inline void sbus_dma_sync_sg_for_cpu(struct sbus_dev *sdev,
					    struct scatterlist *sg,
					    int nents, int direction)
{
	dma_sync_sg_for_cpu(&sdev->ofdev.dev, sg, nents,
			    (enum dma_data_direction) direction);
}
#define sbus_dma_sync_sg sbus_dma_sync_sg_for_cpu

static inline void sbus_dma_sync_sg_for_device(struct sbus_dev *sdev,
					       struct scatterlist *sg,
					       int nents, int direction)
{
	/* No flushing needed to sync cpu writes to the device.  */
}

extern void sbus_arch_bus_ranges_init(struct device_node *, struct sbus_bus *);
extern void sbus_setup_iommu(struct sbus_bus *, struct device_node *);
extern void sbus_setup_arch_props(struct sbus_bus *, struct device_node *);
extern int sbus_arch_preinit(void);
extern void sbus_arch_postinit(void);

#endif /* !(_SPARC64_SBUS_H) */
Commit	Line	Data
f5e706ad SR	1	/* sbus.h: Defines for the Sun SBus.
	2	*
	3	* Copyright (C) 1996, 1999, 2007 David S. Miller (davem@davemloft.net)
	4	*/
	5
	6	#ifndef _SPARC64_SBUS_H
	7	#define _SPARC64_SBUS_H
	8
	9	#include <linux/dma-mapping.h>
	10	#include <linux/ioport.h>
	11
	12	#include <asm/oplib.h>
	13	#include <asm/prom.h>
	14	#include <asm/of_device.h>
	15	#include <asm/iommu.h>
	16	#include <asm/scatterlist.h>
	17
	18	/* We scan which devices are on the SBus using the PROM node device
	19	* tree. SBus devices are described in two different ways. You can
	20	* either get an absolute address at which to access the device, or
	21	* you can get a SBus 'slot' number and an offset within that slot.
	22	*/
	23
	24	/* The base address at which to calculate device OBIO addresses. */
	25	#define SUN_SBUS_BVADDR 0x00000000
	26	#define SBUS_OFF_MASK 0x0fffffff
	27
	28	/* These routines are used to calculate device address from slot
	29	* numbers + offsets, and vice versa.
	30	*/
	31
	32	static inline unsigned long sbus_devaddr(int slotnum, unsigned long offset)
	33	{
	34	return (unsigned long) (SUN_SBUS_BVADDR+((slotnum)<<28)+(offset));
	35	}
	36
	37	static inline int sbus_dev_slot(unsigned long dev_addr)
	38	{
	39	return (int) (((dev_addr)-SUN_SBUS_BVADDR)>>28);
	40	}
	41
	42	struct sbus_bus;
	43
	44	/* Linux SBUS device tables */
	45	struct sbus_dev {
	46	struct of_device ofdev;
	47	struct sbus_bus *bus;
	48	struct sbus_dev *next;
	49	struct sbus_dev *child;
	50	struct sbus_dev *parent;
	51	int prom_node;
	52	char prom_name[64];
	53	int slot;
	54
	55	struct resource resource[PROMREG_MAX];
	56
	57	struct linux_prom_registers reg_addrs[PROMREG_MAX];
	58	int num_registers;
	59
	60	struct linux_prom_ranges device_ranges[PROMREG_MAX];
	61	int num_device_ranges;
	62
	63	unsigned int irqs[4];
	64	int num_irqs;
65	};
66	#define to_sbus_device(d) container_of(d, struct sbus_dev, ofdev.dev)
67
68	/* This struct describes the SBus(s) found on this machine. */
69	struct sbus_bus {
70	struct of_device ofdev;
71	struct sbus_dev devices; / Tree of SBUS devices */
72	struct sbus_bus next; / Next SBUS in system */
73	int prom_node; /* OBP node of SBUS */
74	char prom_name[64]; /* Usually "sbus" or "sbi" */
75	int clock_freq;
76
77	struct linux_prom_ranges sbus_ranges[PROMREG_MAX];
78	int num_sbus_ranges;
79
80	int portid;
81	};
82	#define to_sbus(d) container_of(d, struct sbus_bus, ofdev.dev)
83
84	extern struct sbus_bus *sbus_root;
85
86	/* Device probing routines could find these handy */
87	#define for_each_sbus(bus) \
88	for((bus) = sbus_root; (bus); (bus)=(bus)->next)
89
90	#define for_each_sbusdev(device, bus) \
91	for((device) = (bus)->devices; (device); (device)=(device)->next)
92
93	#define for_all_sbusdev(device, bus) \
94	for ((bus) = sbus_root; (bus); (bus) = (bus)->next) \
95	for ((device) = (bus)->devices; (device); (device) = (device)->next)
96
97	/* Driver DVMA interfaces. */
98	#define sbus_can_dma_64bit(sdev) (1)
99	#define sbus_can_burst64(sdev) (1)
100	extern void sbus_set_sbus64(struct sbus_dev *, int);
101	extern void sbus_fill_device_irq(struct sbus_dev *);
102
103	static inline void sbus_alloc_consistent(struct sbus_dev sdev , size_t size,
104	dma_addr_t *dma_handle)
105	{
106	return dma_alloc_coherent(&sdev->ofdev.dev, size,
107	dma_handle, GFP_ATOMIC);
108	}
109
110	static inline void sbus_free_consistent(struct sbus_dev *sdev, size_t size,
111	void *vaddr, dma_addr_t dma_handle)
112	{
113	return dma_free_coherent(&sdev->ofdev.dev, size, vaddr, dma_handle);
114	}
115
116	#define SBUS_DMA_BIDIRECTIONAL DMA_BIDIRECTIONAL
117	#define SBUS_DMA_TODEVICE DMA_TO_DEVICE
118	#define SBUS_DMA_FROMDEVICE DMA_FROM_DEVICE
119	#define SBUS_DMA_NONE DMA_NONE
120
121	/* All the rest use streaming mode mappings. */
122	static inline dma_addr_t sbus_map_single(struct sbus_dev sdev, void ptr,
123	size_t size, int direction)
124	{
125	return dma_map_single(&sdev->ofdev.dev, ptr, size,
126	(enum dma_data_direction) direction);
127	}
128
129	static inline void sbus_unmap_single(struct sbus_dev *sdev,
130	dma_addr_t dma_addr, size_t size,
131	int direction)
132	{
133	dma_unmap_single(&sdev->ofdev.dev, dma_addr, size,
134	(enum dma_data_direction) direction);
135	}
136
137	static inline int sbus_map_sg(struct sbus_dev sdev, struct scatterlist sg,
138	int nents, int direction)
139	{
140	return dma_map_sg(&sdev->ofdev.dev, sg, nents,
141	(enum dma_data_direction) direction);
142	}
143
144	static inline void sbus_unmap_sg(struct sbus_dev sdev, struct scatterlist sg,
145	int nents, int direction)
146	{
147	dma_unmap_sg(&sdev->ofdev.dev, sg, nents,
148	(enum dma_data_direction) direction);
149	}
150
151	/* Finally, allow explicit synchronization of streamable mappings. */
152	static inline void sbus_dma_sync_single_for_cpu(struct sbus_dev *sdev,
153	dma_addr_t dma_handle,
154	size_t size, int direction)
155	{
156	dma_sync_single_for_cpu(&sdev->ofdev.dev, dma_handle, size,
157	(enum dma_data_direction) direction);
158	}
159	#define sbus_dma_sync_single sbus_dma_sync_single_for_cpu
160
161	static inline void sbus_dma_sync_single_for_device(struct sbus_dev *sdev,
162	dma_addr_t dma_handle,
163	size_t size, int direction)
164	{
165	/* No flushing needed to sync cpu writes to the device. */
166	}
167
168	static inline void sbus_dma_sync_sg_for_cpu(struct sbus_dev *sdev,
169	struct scatterlist *sg,
170	int nents, int direction)
171	{
172	dma_sync_sg_for_cpu(&sdev->ofdev.dev, sg, nents,
173	(enum dma_data_direction) direction);
174	}
175	#define sbus_dma_sync_sg sbus_dma_sync_sg_for_cpu
176
177	static inline void sbus_dma_sync_sg_for_device(struct sbus_dev *sdev,
178	struct scatterlist *sg,
179	int nents, int direction)
180	{
181	/* No flushing needed to sync cpu writes to the device. */
182	}
183
184	extern void sbus_arch_bus_ranges_init(struct device_node , struct sbus_bus );
185	extern void sbus_setup_iommu(struct sbus_bus , struct device_node );
186	extern void sbus_setup_arch_props(struct sbus_bus , struct device_node );
187	extern int sbus_arch_preinit(void);
188	extern void sbus_arch_postinit(void);
189
190	#endif /* !(_SPARC64_SBUS_H) */