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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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fa54b32680
Make the location monitor callback function prototype more useful by changing the argument from an integer to a void pointer. All VME bridge drivers were simply passing the location monitor index (e.g. 0-3) as the argument to these callbacks. It is much more useful to pass back a pointer to data that the callback-registering driver cares about. There appear to be no in-kernel callers of vme_lm_attach (or vme_lme_request for that matter), so this change only affects the VME subsystem and bridge drivers. This has been tested with Tsi148 hardware, but the CA91Cx42 changes have only been compiled. Signed-off-by: Aaron Sierra <asierra@xes-inc.com> Acked-by: Martyn Welch <martyn@welchs.me.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
190 lines
5.0 KiB
C
190 lines
5.0 KiB
C
#ifndef _VME_BRIDGE_H_
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#define _VME_BRIDGE_H_
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#include <linux/vme.h>
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#define VME_CRCSR_BUF_SIZE (508*1024)
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/*
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* Resource structures
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*/
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struct vme_master_resource {
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struct list_head list;
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struct vme_bridge *parent;
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/*
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* We are likely to need to access the VME bus in interrupt context, so
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* protect master routines with a spinlock rather than a mutex.
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*/
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spinlock_t lock;
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int locked;
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int number;
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u32 address_attr;
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u32 cycle_attr;
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u32 width_attr;
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struct resource bus_resource;
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void __iomem *kern_base;
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};
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struct vme_slave_resource {
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struct list_head list;
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struct vme_bridge *parent;
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struct mutex mtx;
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int locked;
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int number;
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u32 address_attr;
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u32 cycle_attr;
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};
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struct vme_dma_pattern {
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u32 pattern;
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u32 type;
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};
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struct vme_dma_pci {
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dma_addr_t address;
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};
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struct vme_dma_vme {
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unsigned long long address;
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u32 aspace;
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u32 cycle;
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u32 dwidth;
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};
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struct vme_dma_list {
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struct list_head list;
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struct vme_dma_resource *parent;
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struct list_head entries;
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struct mutex mtx;
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};
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struct vme_dma_resource {
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struct list_head list;
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struct vme_bridge *parent;
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struct mutex mtx;
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int locked;
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int number;
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struct list_head pending;
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struct list_head running;
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u32 route_attr;
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};
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struct vme_lm_resource {
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struct list_head list;
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struct vme_bridge *parent;
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struct mutex mtx;
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int locked;
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int number;
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int monitors;
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};
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struct vme_error_handler {
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struct list_head list;
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unsigned long long start; /* Beginning of error window */
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unsigned long long end; /* End of error window */
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unsigned long long first_error; /* Address of the first error */
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u32 aspace; /* Address space of error window*/
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unsigned num_errors; /* Number of errors */
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};
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struct vme_callback {
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void (*func)(int, int, void*);
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void *priv_data;
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};
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struct vme_irq {
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int count;
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struct vme_callback callback[VME_NUM_STATUSID];
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};
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/* Allow 16 characters for name (including null character) */
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#define VMENAMSIZ 16
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/* This structure stores all the information about one bridge
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* The structure should be dynamically allocated by the driver and one instance
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* of the structure should be present for each VME chip present in the system.
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*/
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struct vme_bridge {
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char name[VMENAMSIZ];
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int num;
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struct list_head master_resources;
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struct list_head slave_resources;
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struct list_head dma_resources;
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struct list_head lm_resources;
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/* List for registered errors handlers */
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struct list_head vme_error_handlers;
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/* List of devices on this bridge */
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struct list_head devices;
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/* Bridge Info - XXX Move to private structure? */
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struct device *parent; /* Parent device (eg. pdev->dev for PCI) */
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void *driver_priv; /* Private pointer for the bridge driver */
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struct list_head bus_list; /* list of VME buses */
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/* Interrupt callbacks */
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struct vme_irq irq[7];
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/* Locking for VME irq callback configuration */
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struct mutex irq_mtx;
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/* Slave Functions */
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int (*slave_get) (struct vme_slave_resource *, int *,
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unsigned long long *, unsigned long long *, dma_addr_t *,
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u32 *, u32 *);
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int (*slave_set) (struct vme_slave_resource *, int, unsigned long long,
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unsigned long long, dma_addr_t, u32, u32);
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/* Master Functions */
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int (*master_get) (struct vme_master_resource *, int *,
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unsigned long long *, unsigned long long *, u32 *, u32 *,
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u32 *);
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int (*master_set) (struct vme_master_resource *, int,
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unsigned long long, unsigned long long, u32, u32, u32);
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ssize_t (*master_read) (struct vme_master_resource *, void *, size_t,
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loff_t);
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ssize_t (*master_write) (struct vme_master_resource *, void *, size_t,
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loff_t);
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unsigned int (*master_rmw) (struct vme_master_resource *, unsigned int,
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unsigned int, unsigned int, loff_t);
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/* DMA Functions */
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int (*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 (*dma_list_exec) (struct vme_dma_list *);
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int (*dma_list_empty) (struct vme_dma_list *);
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/* Interrupt Functions */
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void (*irq_set) (struct vme_bridge *, int, int, int);
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int (*irq_generate) (struct vme_bridge *, int, int);
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/* Location monitor functions */
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int (*lm_set) (struct vme_lm_resource *, unsigned long long, u32, u32);
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int (*lm_get) (struct vme_lm_resource *, unsigned long long *, u32 *,
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u32 *);
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int (*lm_attach)(struct vme_lm_resource *, int,
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void (*callback)(void *), void *);
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int (*lm_detach) (struct vme_lm_resource *, int);
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/* CR/CSR space functions */
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int (*slot_get) (struct vme_bridge *);
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/* Bridge parent interface */
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void *(*alloc_consistent)(struct device *dev, size_t size,
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dma_addr_t *dma);
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void (*free_consistent)(struct device *dev, size_t size,
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void *vaddr, dma_addr_t dma);
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};
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void vme_bus_error_handler(struct vme_bridge *bridge,
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unsigned long long address, int am);
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void vme_irq_handler(struct vme_bridge *, int, int);
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struct vme_bridge *vme_init_bridge(struct vme_bridge *);
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int vme_register_bridge(struct vme_bridge *);
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void vme_unregister_bridge(struct vme_bridge *);
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struct vme_error_handler *vme_register_error_handler(
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struct vme_bridge *bridge, u32 aspace,
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unsigned long long address, size_t len);
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void vme_unregister_error_handler(struct vme_error_handler *handler);
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#endif /* _VME_BRIDGE_H_ */
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