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2adc75fba3
The driver core ignores the return value of struct bus_type::remove() because there is only little that can be done. To simplify the quest to make this function return void, let struct vme_driver::remove return void, too. There is only a single vme driver and it already returns 0 unconditionally in .remove(). Also fix the bus remove function to always return 0. Signed-off-by: Uwe Kleine-König <uwe@kleine-koenig.org> Link: https://lore.kernel.org/r/20210127212329.98517-1-uwe@kleine-koenig.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
191 lines
5.7 KiB
C
191 lines
5.7 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _VME_H_
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#define _VME_H_
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/* Resource Type */
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enum vme_resource_type {
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VME_MASTER,
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VME_SLAVE,
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VME_DMA,
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VME_LM
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};
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/* VME Address Spaces */
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#define VME_A16 0x1
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#define VME_A24 0x2
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#define VME_A32 0x4
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#define VME_A64 0x8
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#define VME_CRCSR 0x10
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#define VME_USER1 0x20
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#define VME_USER2 0x40
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#define VME_USER3 0x80
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#define VME_USER4 0x100
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#define VME_A16_MAX 0x10000ULL
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#define VME_A24_MAX 0x1000000ULL
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#define VME_A32_MAX 0x100000000ULL
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#define VME_A64_MAX 0x10000000000000000ULL
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#define VME_CRCSR_MAX 0x1000000ULL
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/* VME Cycle Types */
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#define VME_SCT 0x1
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#define VME_BLT 0x2
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#define VME_MBLT 0x4
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#define VME_2eVME 0x8
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#define VME_2eSST 0x10
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#define VME_2eSSTB 0x20
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#define VME_2eSST160 0x100
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#define VME_2eSST267 0x200
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#define VME_2eSST320 0x400
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#define VME_SUPER 0x1000
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#define VME_USER 0x2000
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#define VME_PROG 0x4000
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#define VME_DATA 0x8000
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/* VME Data Widths */
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#define VME_D8 0x1
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#define VME_D16 0x2
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#define VME_D32 0x4
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#define VME_D64 0x8
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/* Arbitration Scheduling Modes */
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#define VME_R_ROBIN_MODE 0x1
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#define VME_PRIORITY_MODE 0x2
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#define VME_DMA_PATTERN (1<<0)
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#define VME_DMA_PCI (1<<1)
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#define VME_DMA_VME (1<<2)
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#define VME_DMA_PATTERN_BYTE (1<<0)
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#define VME_DMA_PATTERN_WORD (1<<1)
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#define VME_DMA_PATTERN_INCREMENT (1<<2)
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#define VME_DMA_VME_TO_MEM (1<<0)
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#define VME_DMA_MEM_TO_VME (1<<1)
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#define VME_DMA_VME_TO_VME (1<<2)
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#define VME_DMA_MEM_TO_MEM (1<<3)
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#define VME_DMA_PATTERN_TO_VME (1<<4)
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#define VME_DMA_PATTERN_TO_MEM (1<<5)
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struct vme_dma_attr {
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u32 type;
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void *private;
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};
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struct vme_resource {
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enum vme_resource_type type;
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struct list_head *entry;
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};
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extern struct bus_type vme_bus_type;
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/* Number of VME interrupt vectors */
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#define VME_NUM_STATUSID 256
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/* VME_MAX_BRIDGES comes from the type of vme_bus_numbers */
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#define VME_MAX_BRIDGES (sizeof(unsigned int)*8)
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#define VME_MAX_SLOTS 32
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#define VME_SLOT_CURRENT -1
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#define VME_SLOT_ALL -2
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/**
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* struct vme_dev - Structure representing a VME device
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* @num: The device number
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* @bridge: Pointer to the bridge device this device is on
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* @dev: Internal device structure
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* @drv_list: List of devices (per driver)
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* @bridge_list: List of devices (per bridge)
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*/
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struct vme_dev {
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int num;
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struct vme_bridge *bridge;
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struct device dev;
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struct list_head drv_list;
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struct list_head bridge_list;
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};
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/**
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* struct vme_driver - Structure representing a VME driver
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* @name: Driver name, should be unique among VME drivers and usually the same
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* as the module name.
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* @match: Callback used to determine whether probe should be run.
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* @probe: Callback for device binding, called when new device is detected.
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* @remove: Callback, called on device removal.
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* @driver: Underlying generic device driver structure.
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* @devices: List of VME devices (struct vme_dev) associated with this driver.
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*/
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struct vme_driver {
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const char *name;
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int (*match)(struct vme_dev *);
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int (*probe)(struct vme_dev *);
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void (*remove)(struct vme_dev *);
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struct device_driver driver;
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struct list_head devices;
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};
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void *vme_alloc_consistent(struct vme_resource *, size_t, dma_addr_t *);
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void vme_free_consistent(struct vme_resource *, size_t, void *,
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dma_addr_t);
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size_t vme_get_size(struct vme_resource *);
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int vme_check_window(u32 aspace, unsigned long long vme_base,
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unsigned long long size);
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struct vme_resource *vme_slave_request(struct vme_dev *, u32, u32);
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int vme_slave_set(struct vme_resource *, int, unsigned long long,
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unsigned long long, dma_addr_t, u32, u32);
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int vme_slave_get(struct vme_resource *, int *, unsigned long long *,
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unsigned long long *, dma_addr_t *, u32 *, u32 *);
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void vme_slave_free(struct vme_resource *);
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struct vme_resource *vme_master_request(struct vme_dev *, u32, u32, u32);
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int vme_master_set(struct vme_resource *, int, unsigned long long,
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unsigned long long, u32, u32, u32);
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int vme_master_get(struct vme_resource *, int *, unsigned long long *,
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unsigned long long *, u32 *, u32 *, u32 *);
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ssize_t vme_master_read(struct vme_resource *, void *, size_t, loff_t);
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ssize_t vme_master_write(struct vme_resource *, void *, size_t, loff_t);
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unsigned int vme_master_rmw(struct vme_resource *, unsigned int, unsigned int,
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unsigned int, loff_t);
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int vme_master_mmap(struct vme_resource *resource, struct vm_area_struct *vma);
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void vme_master_free(struct vme_resource *);
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struct vme_resource *vme_dma_request(struct vme_dev *, u32);
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struct vme_dma_list *vme_new_dma_list(struct vme_resource *);
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struct vme_dma_attr *vme_dma_pattern_attribute(u32, u32);
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struct vme_dma_attr *vme_dma_pci_attribute(dma_addr_t);
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struct vme_dma_attr *vme_dma_vme_attribute(unsigned long long, u32, u32, u32);
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void vme_dma_free_attribute(struct vme_dma_attr *);
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int vme_dma_list_add(struct vme_dma_list *, struct vme_dma_attr *,
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struct vme_dma_attr *, size_t);
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int vme_dma_list_exec(struct vme_dma_list *);
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int vme_dma_list_free(struct vme_dma_list *);
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int vme_dma_free(struct vme_resource *);
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int vme_irq_request(struct vme_dev *, int, int,
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void (*callback)(int, int, void *), void *);
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void vme_irq_free(struct vme_dev *, int, int);
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int vme_irq_generate(struct vme_dev *, int, int);
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struct vme_resource *vme_lm_request(struct vme_dev *);
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int vme_lm_count(struct vme_resource *);
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int vme_lm_set(struct vme_resource *, unsigned long long, u32, u32);
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int vme_lm_get(struct vme_resource *, unsigned long long *, u32 *, u32 *);
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int vme_lm_attach(struct vme_resource *, int, void (*callback)(void *), void *);
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int vme_lm_detach(struct vme_resource *, int);
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void vme_lm_free(struct vme_resource *);
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int vme_slot_num(struct vme_dev *);
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int vme_bus_num(struct vme_dev *);
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int vme_register_driver(struct vme_driver *, unsigned int);
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void vme_unregister_driver(struct vme_driver *);
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#endif /* _VME_H_ */
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