Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* $Id: sbus.h,v 1.14 2000/02/18 13:50:55 davem Exp $ |
| 2 | * sbus.h: Defines for the Sun SBus. |
| 3 | * |
| 4 | * Copyright (C) 1996, 1999 David S. Miller (davem@redhat.com) |
| 5 | */ |
| 6 | |
| 7 | #ifndef _SPARC64_SBUS_H |
| 8 | #define _SPARC64_SBUS_H |
| 9 | |
| 10 | #include <linux/dma-mapping.h> |
| 11 | #include <linux/ioport.h> |
| 12 | |
| 13 | #include <asm/oplib.h> |
David S. Miller | 576c352 | 2006-06-23 15:55:45 -0700 | [diff] [blame] | 14 | #include <asm/prom.h> |
| 15 | #include <asm/of_device.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 16 | #include <asm/iommu.h> |
| 17 | #include <asm/scatterlist.h> |
| 18 | |
| 19 | /* We scan which devices are on the SBus using the PROM node device |
| 20 | * tree. SBus devices are described in two different ways. You can |
| 21 | * either get an absolute address at which to access the device, or |
| 22 | * you can get a SBus 'slot' number and an offset within that slot. |
| 23 | */ |
| 24 | |
| 25 | /* The base address at which to calculate device OBIO addresses. */ |
| 26 | #define SUN_SBUS_BVADDR 0x00000000 |
| 27 | #define SBUS_OFF_MASK 0x0fffffff |
| 28 | |
| 29 | /* These routines are used to calculate device address from slot |
| 30 | * numbers + offsets, and vice versa. |
| 31 | */ |
| 32 | |
| 33 | static __inline__ unsigned long sbus_devaddr(int slotnum, unsigned long offset) |
| 34 | { |
| 35 | return (unsigned long) (SUN_SBUS_BVADDR+((slotnum)<<28)+(offset)); |
| 36 | } |
| 37 | |
| 38 | static __inline__ int sbus_dev_slot(unsigned long dev_addr) |
| 39 | { |
| 40 | return (int) (((dev_addr)-SUN_SBUS_BVADDR)>>28); |
| 41 | } |
| 42 | |
| 43 | struct sbus_bus; |
| 44 | |
| 45 | /* Linux SBUS device tables */ |
| 46 | struct sbus_dev { |
David S. Miller | 576c352 | 2006-06-23 15:55:45 -0700 | [diff] [blame] | 47 | struct of_device ofdev; |
| 48 | struct sbus_bus *bus; |
| 49 | struct sbus_dev *next; |
| 50 | struct sbus_dev *child; |
| 51 | struct sbus_dev *parent; |
| 52 | int prom_node; |
| 53 | char prom_name[64]; |
| 54 | int slot; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 55 | |
| 56 | struct resource resource[PROMREG_MAX]; |
| 57 | |
| 58 | struct linux_prom_registers reg_addrs[PROMREG_MAX]; |
David S. Miller | 576c352 | 2006-06-23 15:55:45 -0700 | [diff] [blame] | 59 | int num_registers; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 60 | |
| 61 | struct linux_prom_ranges device_ranges[PROMREG_MAX]; |
| 62 | int num_device_ranges; |
| 63 | |
| 64 | unsigned int irqs[4]; |
| 65 | int num_irqs; |
| 66 | }; |
David S. Miller | 576c352 | 2006-06-23 15:55:45 -0700 | [diff] [blame] | 67 | #define to_sbus_device(d) container_of(d, struct sbus_dev, ofdev.dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 68 | |
| 69 | /* This struct describes the SBus(s) found on this machine. */ |
| 70 | struct sbus_bus { |
David S. Miller | 576c352 | 2006-06-23 15:55:45 -0700 | [diff] [blame] | 71 | struct of_device ofdev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 72 | void *iommu; /* Opaque IOMMU cookie */ |
| 73 | struct sbus_dev *devices; /* Tree of SBUS devices */ |
| 74 | struct sbus_bus *next; /* Next SBUS in system */ |
| 75 | int prom_node; /* OBP node of SBUS */ |
| 76 | char prom_name[64]; /* Usually "sbus" or "sbi" */ |
| 77 | int clock_freq; |
| 78 | |
| 79 | struct linux_prom_ranges sbus_ranges[PROMREG_MAX]; |
| 80 | int num_sbus_ranges; |
| 81 | |
| 82 | int portid; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 83 | }; |
David S. Miller | 576c352 | 2006-06-23 15:55:45 -0700 | [diff] [blame] | 84 | #define to_sbus(d) container_of(d, struct sbus_bus, ofdev.dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 85 | |
| 86 | extern struct sbus_bus *sbus_root; |
| 87 | |
| 88 | /* Device probing routines could find these handy */ |
| 89 | #define for_each_sbus(bus) \ |
| 90 | for((bus) = sbus_root; (bus); (bus)=(bus)->next) |
| 91 | |
| 92 | #define for_each_sbusdev(device, bus) \ |
| 93 | for((device) = (bus)->devices; (device); (device)=(device)->next) |
| 94 | |
| 95 | #define for_all_sbusdev(device, bus) \ |
| 96 | for ((bus) = sbus_root; (bus); (bus) = (bus)->next) \ |
| 97 | for ((device) = (bus)->devices; (device); (device) = (device)->next) |
| 98 | |
| 99 | /* Driver DVMA interfaces. */ |
| 100 | #define sbus_can_dma_64bit(sdev) (1) |
| 101 | #define sbus_can_burst64(sdev) (1) |
| 102 | extern void sbus_set_sbus64(struct sbus_dev *, int); |
David S. Miller | 8fae097 | 2006-06-20 15:23:28 -0700 | [diff] [blame] | 103 | extern void sbus_fill_device_irq(struct sbus_dev *); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 104 | |
| 105 | /* These yield IOMMU mappings in consistent mode. */ |
| 106 | extern void *sbus_alloc_consistent(struct sbus_dev *, size_t, dma_addr_t *dma_addrp); |
| 107 | extern void sbus_free_consistent(struct sbus_dev *, size_t, void *, dma_addr_t); |
| 108 | |
| 109 | #define SBUS_DMA_BIDIRECTIONAL DMA_BIDIRECTIONAL |
| 110 | #define SBUS_DMA_TODEVICE DMA_TO_DEVICE |
| 111 | #define SBUS_DMA_FROMDEVICE DMA_FROM_DEVICE |
| 112 | #define SBUS_DMA_NONE DMA_NONE |
| 113 | |
| 114 | /* All the rest use streaming mode mappings. */ |
| 115 | extern dma_addr_t sbus_map_single(struct sbus_dev *, void *, size_t, int); |
| 116 | extern void sbus_unmap_single(struct sbus_dev *, dma_addr_t, size_t, int); |
| 117 | extern int sbus_map_sg(struct sbus_dev *, struct scatterlist *, int, int); |
| 118 | extern void sbus_unmap_sg(struct sbus_dev *, struct scatterlist *, int, int); |
| 119 | |
| 120 | /* Finally, allow explicit synchronization of streamable mappings. */ |
| 121 | extern void sbus_dma_sync_single_for_cpu(struct sbus_dev *, dma_addr_t, size_t, int); |
| 122 | #define sbus_dma_sync_single sbus_dma_sync_single_for_cpu |
| 123 | extern void sbus_dma_sync_single_for_device(struct sbus_dev *, dma_addr_t, size_t, int); |
| 124 | extern void sbus_dma_sync_sg_for_cpu(struct sbus_dev *, struct scatterlist *, int, int); |
| 125 | #define sbus_dma_sync_sg sbus_dma_sync_sg_for_cpu |
| 126 | extern void sbus_dma_sync_sg_for_device(struct sbus_dev *, struct scatterlist *, int, int); |
| 127 | |
David S. Miller | 576c352 | 2006-06-23 15:55:45 -0700 | [diff] [blame] | 128 | extern void sbus_arch_bus_ranges_init(struct device_node *, struct sbus_bus *); |
| 129 | extern void sbus_setup_iommu(struct sbus_bus *, struct device_node *); |
| 130 | extern void sbus_setup_arch_props(struct sbus_bus *, struct device_node *); |
| 131 | extern int sbus_arch_preinit(void); |
| 132 | extern void sbus_arch_postinit(void); |
| 133 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 134 | #endif /* !(_SPARC64_SBUS_H) */ |