diff options
Diffstat (limited to 'drivers/fpga/dfl.h')
| -rw-r--r-- | drivers/fpga/dfl.h | 103 |
1 files changed, 92 insertions, 11 deletions
diff --git a/drivers/fpga/dfl.h b/drivers/fpga/dfl.h index a32dfba2a88b..5dc758f655b7 100644 --- a/drivers/fpga/dfl.h +++ b/drivers/fpga/dfl.h @@ -197,7 +197,7 @@ int dfl_fpga_check_port_id(struct platform_device *pdev, void *pport_id); * @id: unique dfl private feature id. */ struct dfl_feature_id { - u64 id; + u16 id; }; /** @@ -236,16 +236,18 @@ struct dfl_feature_irq_ctx { * @irq_ctx: interrupt context list. * @nr_irqs: number of interrupt contexts. * @ops: ops of this sub feature. + * @ddev: ptr to the dfl device of this sub feature. * @priv: priv data of this feature. */ struct dfl_feature { struct platform_device *dev; - u64 id; + u16 id; int resource_index; void __iomem *ioaddr; struct dfl_feature_irq_ctx *irq_ctx; unsigned int nr_irqs; const struct dfl_feature_ops *ops; + struct dfl_device *ddev; void *priv; }; @@ -365,7 +367,7 @@ struct platform_device *dfl_fpga_inode_to_feature_dev(struct inode *inode) (feature) < (pdata)->features + (pdata)->num; (feature)++) static inline -struct dfl_feature *dfl_get_feature_by_id(struct device *dev, u64 id) +struct dfl_feature *dfl_get_feature_by_id(struct device *dev, u16 id) { struct dfl_feature_platform_data *pdata = dev_get_platdata(dev); struct dfl_feature *feature; @@ -378,7 +380,7 @@ struct dfl_feature *dfl_get_feature_by_id(struct device *dev, u64 id) } static inline -void __iomem *dfl_get_feature_ioaddr_by_id(struct device *dev, u64 id) +void __iomem *dfl_get_feature_ioaddr_by_id(struct device *dev, u16 id) { struct dfl_feature *feature = dfl_get_feature_by_id(dev, id); @@ -389,7 +391,7 @@ void __iomem *dfl_get_feature_ioaddr_by_id(struct device *dev, u64 id) return NULL; } -static inline bool is_dfl_feature_present(struct device *dev, u64 id) +static inline bool is_dfl_feature_present(struct device *dev, u16 id) { return !!dfl_get_feature_ioaddr_by_id(dev, id); } @@ -441,22 +443,17 @@ struct dfl_fpga_enum_info { * * @start: base address of this device feature list. * @len: size of this device feature list. - * @ioaddr: mapped base address of this device feature list. * @node: node in list of device feature lists. */ struct dfl_fpga_enum_dfl { resource_size_t start; resource_size_t len; - - void __iomem *ioaddr; - struct list_head node; }; struct dfl_fpga_enum_info *dfl_fpga_enum_info_alloc(struct device *dev); int dfl_fpga_enum_info_add_dfl(struct dfl_fpga_enum_info *info, - resource_size_t start, resource_size_t len, - void __iomem *ioaddr); + resource_size_t start, resource_size_t len); int dfl_fpga_enum_info_add_irq(struct dfl_fpga_enum_info *info, unsigned int nr_irqs, int *irq_table); void dfl_fpga_enum_info_free(struct dfl_fpga_enum_info *info); @@ -519,4 +516,88 @@ long dfl_feature_ioctl_set_irq(struct platform_device *pdev, struct dfl_feature *feature, unsigned long arg); +/** + * enum dfl_id_type - define the DFL FIU types + */ +enum dfl_id_type { + FME_ID, + PORT_ID, + DFL_ID_MAX, +}; + +/** + * struct dfl_device_id - dfl device identifier + * @type: contains 4 bits DFL FIU type of the device. See enum dfl_id_type. + * @feature_id: contains 12 bits feature identifier local to its DFL FIU type. + * @driver_data: driver specific data. + */ +struct dfl_device_id { + u8 type; + u16 feature_id; + unsigned long driver_data; +}; + +/** + * struct dfl_device - represent an dfl device on dfl bus + * + * @dev: generic device interface. + * @id: id of the dfl device. + * @type: type of DFL FIU of the device. See enum dfl_id_type. + * @feature_id: 16 bits feature identifier local to its DFL FIU type. + * @mmio_res: mmio resource of this dfl device. + * @irqs: list of Linux IRQ numbers of this dfl device. + * @num_irqs: number of IRQs supported by this dfl device. + * @cdev: pointer to DFL FPGA container device this dfl device belongs to. + * @id_entry: matched id entry in dfl driver's id table. + */ +struct dfl_device { + struct device dev; + int id; + u8 type; + u16 feature_id; + struct resource mmio_res; + int *irqs; + unsigned int num_irqs; + struct dfl_fpga_cdev *cdev; + const struct dfl_device_id *id_entry; +}; + +/** + * struct dfl_driver - represent an dfl device driver + * + * @drv: driver model structure. + * @id_table: pointer to table of device IDs the driver is interested in. + * { } member terminated. + * @probe: mandatory callback for device binding. + * @remove: callback for device unbinding. + */ +struct dfl_driver { + struct device_driver drv; + const struct dfl_device_id *id_table; + + int (*probe)(struct dfl_device *dfl_dev); + void (*remove)(struct dfl_device *dfl_dev); +}; + +#define to_dfl_dev(d) container_of(d, struct dfl_device, dev) +#define to_dfl_drv(d) container_of(d, struct dfl_driver, drv) + +/* + * use a macro to avoid include chaining to get THIS_MODULE. + */ +#define dfl_driver_register(drv) \ + __dfl_driver_register(drv, THIS_MODULE) +int __dfl_driver_register(struct dfl_driver *dfl_drv, struct module *owner); +void dfl_driver_unregister(struct dfl_driver *dfl_drv); + +/* + * module_dfl_driver() - Helper macro for drivers that don't do + * anything special in module init/exit. This eliminates a lot of + * boilerplate. Each module may only use this macro once, and + * calling it replaces module_init() and module_exit(). + */ +#define module_dfl_driver(__dfl_driver) \ + module_driver(__dfl_driver, dfl_driver_register, \ + dfl_driver_unregister) + #endif /* __FPGA_DFL_H */ |