1/* SPDX-License-Identifier: GPL-2.0 */ 2#ifndef _VME_H_ 3#define _VME_H_ 4 5#include <linux/bitops.h> 6 7/* Resource Type */ 8enum vme_resource_type { 9 VME_MASTER, 10 VME_SLAVE, 11 VME_DMA, 12 VME_LM 13}; 14 15/* VME Address Spaces */ 16#define VME_A16 0x1 17#define VME_A24 0x2 18#define VME_A32 0x4 19#define VME_A64 0x8 20#define VME_CRCSR 0x10 21#define VME_USER1 0x20 22#define VME_USER2 0x40 23#define VME_USER3 0x80 24#define VME_USER4 0x100 25 26#define VME_A16_MAX 0x10000ULL 27#define VME_A24_MAX 0x1000000ULL 28#define VME_A32_MAX 0x100000000ULL 29#define VME_A64_MAX 0x10000000000000000ULL 30#define VME_CRCSR_MAX 0x1000000ULL 31 32/* VME Cycle Types */ 33#define VME_SCT 0x1 34#define VME_BLT 0x2 35#define VME_MBLT 0x4 36#define VME_2eVME 0x8 37#define VME_2eSST 0x10 38#define VME_2eSSTB 0x20 39 40#define VME_2eSST160 0x100 41#define VME_2eSST267 0x200 42#define VME_2eSST320 0x400 43 44#define VME_SUPER 0x1000 45#define VME_USER 0x2000 46#define VME_PROG 0x4000 47#define VME_DATA 0x8000 48 49/* VME Data Widths */ 50#define VME_D8 0x1 51#define VME_D16 0x2 52#define VME_D32 0x4 53#define VME_D64 0x8 54 55/* Arbitration Scheduling Modes */ 56#define VME_R_ROBIN_MODE 0x1 57#define VME_PRIORITY_MODE 0x2 58 59#define VME_DMA_PATTERN BIT(0) 60#define VME_DMA_PCI BIT(1) 61#define VME_DMA_VME BIT(2) 62 63#define VME_DMA_PATTERN_BYTE BIT(0) 64#define VME_DMA_PATTERN_WORD BIT(1) 65#define VME_DMA_PATTERN_INCREMENT BIT(2) 66 67#define VME_DMA_VME_TO_MEM BIT(0) 68#define VME_DMA_MEM_TO_VME BIT(1) 69#define VME_DMA_VME_TO_VME BIT(2) 70#define VME_DMA_MEM_TO_MEM BIT(3) 71#define VME_DMA_PATTERN_TO_VME BIT(4) 72#define VME_DMA_PATTERN_TO_MEM BIT(5) 73 74struct vme_dma_attr { 75 u32 type; 76 void *private; 77}; 78 79struct vme_resource { 80 enum vme_resource_type type; 81 struct list_head *entry; 82}; 83 84extern const struct bus_type vme_bus_type; 85 86/* Number of VME interrupt vectors */ 87#define VME_NUM_STATUSID 256 88 89/* VME_MAX_BRIDGES comes from the type of vme_bus_numbers */ 90#define VME_MAX_BRIDGES (sizeof(unsigned int) * 8) 91#define VME_MAX_SLOTS 32 92 93#define VME_SLOT_CURRENT -1 94#define VME_SLOT_ALL -2 95 96/** 97 * struct vme_dev - Structure representing a VME device 98 * @num: The device number 99 * @bridge: Pointer to the bridge device this device is on 100 * @dev: Internal device structure 101 * @drv_list: List of devices (per driver) 102 * @bridge_list: List of devices (per bridge) 103 */ 104struct vme_dev { 105 int num; 106 struct vme_bridge *bridge; 107 struct device dev; 108 struct list_head drv_list; 109 struct list_head bridge_list; 110}; 111 112/** 113 * struct vme_driver - Structure representing a VME driver 114 * @name: Driver name, should be unique among VME drivers and usually the same 115 * as the module name. 116 * @match: Callback used to determine whether probe should be run. 117 * @probe: Callback for device binding, called when new device is detected. 118 * @remove: Callback, called on device removal. 119 * @driver: Underlying generic device driver structure. 120 * @devices: List of VME devices (struct vme_dev) associated with this driver. 121 */ 122struct vme_driver { 123 const char *name; 124 int (*match)(struct vme_dev *); 125 int (*probe)(struct vme_dev *); 126 void (*remove)(struct vme_dev *); 127 struct device_driver driver; 128 struct list_head devices; 129}; 130 131void *vme_alloc_consistent(struct vme_resource *, size_t, dma_addr_t *); 132void vme_free_consistent(struct vme_resource *, size_t, void *, 133 dma_addr_t); 134 135size_t vme_get_size(struct vme_resource *); 136int vme_check_window(struct vme_bridge *bridge, u32 aspace, 137 unsigned long long vme_base, unsigned long long size); 138 139struct vme_resource *vme_slave_request(struct vme_dev *, u32, u32); 140int vme_slave_set(struct vme_resource *, int, unsigned long long, 141 unsigned long long, dma_addr_t, u32, u32); 142int vme_slave_get(struct vme_resource *, int *, unsigned long long *, 143 unsigned long long *, dma_addr_t *, u32 *, u32 *); 144void vme_slave_free(struct vme_resource *); 145 146struct vme_resource *vme_master_request(struct vme_dev *, u32, u32, u32); 147int vme_master_set(struct vme_resource *, int, unsigned long long, 148 unsigned long long, u32, u32, u32); 149int vme_master_get(struct vme_resource *, int *, unsigned long long *, 150 unsigned long long *, u32 *, u32 *, u32 *); 151ssize_t vme_master_read(struct vme_resource *, void *, size_t, loff_t); 152ssize_t vme_master_write(struct vme_resource *, void *, size_t, loff_t); 153unsigned int vme_master_rmw(struct vme_resource *, unsigned int, unsigned int, 154 unsigned int, loff_t); 155int vme_master_mmap(struct vme_resource *resource, struct vm_area_struct *vma); 156void vme_master_free(struct vme_resource *); 157 158struct vme_resource *vme_dma_request(struct vme_dev *, u32); 159struct vme_dma_list *vme_new_dma_list(struct vme_resource *); 160struct vme_dma_attr *vme_dma_pattern_attribute(u32, u32); 161struct vme_dma_attr *vme_dma_pci_attribute(dma_addr_t); 162struct vme_dma_attr *vme_dma_vme_attribute(unsigned long long, u32, u32, u32); 163void vme_dma_free_attribute(struct vme_dma_attr *); 164int vme_dma_list_add(struct vme_dma_list *, struct vme_dma_attr *, 165 struct vme_dma_attr *, size_t); 166int vme_dma_list_exec(struct vme_dma_list *); 167int vme_dma_list_free(struct vme_dma_list *); 168int vme_dma_free(struct vme_resource *); 169 170int vme_irq_request(struct vme_dev *, int, int, 171 void (*callback)(int, int, void *), void *); 172void vme_irq_free(struct vme_dev *, int, int); 173int vme_irq_generate(struct vme_dev *, int, int); 174 175struct vme_resource *vme_lm_request(struct vme_dev *); 176int vme_lm_count(struct vme_resource *); 177int vme_lm_set(struct vme_resource *, unsigned long long, u32, u32); 178int vme_lm_get(struct vme_resource *, unsigned long long *, u32 *, u32 *); 179int vme_lm_attach(struct vme_resource *, int, void (*callback)(void *), void *); 180int vme_lm_detach(struct vme_resource *, int); 181void vme_lm_free(struct vme_resource *); 182 183int vme_slot_num(struct vme_dev *); 184int vme_bus_num(struct vme_dev *); 185 186int vme_register_driver(struct vme_driver *, unsigned int); 187void vme_unregister_driver(struct vme_driver *); 188 189#endif /* _VME_H_ */ 190 191