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Diffstat (limited to 'drivers/misc/mic/card/mic_device.h')
-rw-r--r-- | drivers/misc/mic/card/mic_device.h | 133 |
1 files changed, 133 insertions, 0 deletions
diff --git a/drivers/misc/mic/card/mic_device.h b/drivers/misc/mic/card/mic_device.h new file mode 100644 index 000000000000..347b9b3b7916 --- /dev/null +++ b/drivers/misc/mic/card/mic_device.h @@ -0,0 +1,133 @@ +/* + * Intel MIC Platform Software Stack (MPSS) + * + * Copyright(c) 2013 Intel Corporation. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License, version 2, as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * The full GNU General Public License is included in this distribution in + * the file called "COPYING". + * + * Disclaimer: The codes contained in these modules may be specific to + * the Intel Software Development Platform codenamed: Knights Ferry, and + * the Intel product codenamed: Knights Corner, and are not backward + * compatible with other Intel products. Additionally, Intel will NOT + * support the codes or instruction set in future products. + * + * Intel MIC Card driver. + * + */ +#ifndef _MIC_CARD_DEVICE_H_ +#define _MIC_CARD_DEVICE_H_ + +#include <linux/workqueue.h> +#include <linux/io.h> + +/** + * struct mic_intr_info - Contains h/w specific interrupt sources info + * + * @num_intr: The number of irqs available + */ +struct mic_intr_info { + u32 num_intr; +}; + +/** + * struct mic_irq_info - OS specific irq information + * + * @irq_usage_count: usage count array tracking the number of sources + * assigned for each irq. + */ +struct mic_irq_info { + int *irq_usage_count; +}; + +/** + * struct mic_device - MIC device information. + * + * @mmio: MMIO bar information. + */ +struct mic_device { + struct mic_mw mmio; +}; + +/** + * struct mic_driver - MIC card driver information. + * + * @name: Name for MIC driver. + * @dbg_dir: debugfs directory of this MIC device. + * @dev: The device backing this MIC. + * @dp: The pointer to the virtio device page. + * @mdev: MIC device information for the host. + * @hotplug_work: Hot plug work for adding/removing virtio devices. + * @irq_info: The OS specific irq information + * @intr_info: H/W specific interrupt information. + */ +struct mic_driver { + char name[20]; + struct dentry *dbg_dir; + struct device *dev; + void __iomem *dp; + struct mic_device mdev; + struct work_struct hotplug_work; + struct mic_irq_info irq_info; + struct mic_intr_info intr_info; +}; + +/** + * struct mic_irq - opaque pointer used as cookie + */ +struct mic_irq; + +/** + * mic_mmio_read - read from an MMIO register. + * @mw: MMIO register base virtual address. + * @offset: register offset. + * + * RETURNS: register value. + */ +static inline u32 mic_mmio_read(struct mic_mw *mw, u32 offset) +{ + return ioread32(mw->va + offset); +} + +/** + * mic_mmio_write - write to an MMIO register. + * @mw: MMIO register base virtual address. + * @val: the data value to put into the register + * @offset: register offset. + * + * RETURNS: none. + */ +static inline void +mic_mmio_write(struct mic_mw *mw, u32 val, u32 offset) +{ + iowrite32(val, mw->va + offset); +} + +int mic_driver_init(struct mic_driver *mdrv); +void mic_driver_uninit(struct mic_driver *mdrv); +int mic_next_card_db(void); +struct mic_irq *mic_request_card_irq(irqreturn_t (*func)(int irq, void *data), + const char *name, void *data, int intr_src); +void mic_free_card_irq(struct mic_irq *cookie, void *data); +u32 mic_read_spad(struct mic_device *mdev, unsigned int idx); +void mic_send_intr(struct mic_device *mdev, int doorbell); +int mic_db_to_irq(struct mic_driver *mdrv, int db); +u32 mic_ack_interrupt(struct mic_device *mdev); +void mic_hw_intr_init(struct mic_driver *mdrv); +void __iomem * +mic_card_map(struct mic_device *mdev, dma_addr_t addr, size_t size); +void mic_card_unmap(struct mic_device *mdev, void __iomem *addr); +void __init mic_create_card_debug_dir(struct mic_driver *mdrv); +void mic_delete_card_debug_dir(struct mic_driver *mdrv); +void __init mic_init_card_debugfs(void); +void mic_exit_card_debugfs(void); +#endif |