2 * Intel MIC Platform Software Stack (MPSS)
4 * Copyright(c) 2013 Intel Corporation.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License, version 2, as
8 * published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License for more details.
15 * The full GNU General Public License is included in this distribution in
16 * the file called "COPYING".
18 * Disclaimer: The codes contained in these modules may be specific to
19 * the Intel Software Development Platform codenamed: Knights Ferry, and
20 * the Intel product codenamed: Knights Corner, and are not backward
21 * compatible with other Intel products. Additionally, Intel will NOT
22 * support the codes or instruction set in future products.
24 * Intel MIC Card driver.
27 #ifndef _MIC_CARD_DEVICE_H_
28 #define _MIC_CARD_DEVICE_H_
30 #include <linux/workqueue.h>
32 #include <linux/irqreturn.h>
35 * struct mic_intr_info - Contains h/w specific interrupt sources info
37 * @num_intr: The number of irqs available
39 struct mic_intr_info {
44 * struct mic_irq_info - OS specific irq information
46 * @irq_usage_count: usage count array tracking the number of sources
47 * assigned for each irq.
54 * struct mic_device - MIC device information.
56 * @mmio: MMIO bar information.
63 * struct mic_driver - MIC card driver information.
65 * @name: Name for MIC driver.
66 * @dbg_dir: debugfs directory of this MIC device.
67 * @dev: The device backing this MIC.
68 * @dp: The pointer to the virtio device page.
69 * @mdev: MIC device information for the host.
70 * @hotplug_work: Hot plug work for adding/removing virtio devices.
71 * @irq_info: The OS specific irq information
72 * @intr_info: H/W specific interrupt information.
76 struct dentry *dbg_dir;
79 struct mic_device mdev;
80 struct work_struct hotplug_work;
81 struct mic_irq_info irq_info;
82 struct mic_intr_info intr_info;
86 * struct mic_irq - opaque pointer used as cookie
91 * mic_mmio_read - read from an MMIO register.
92 * @mw: MMIO register base virtual address.
93 * @offset: register offset.
95 * RETURNS: register value.
97 static inline u32 mic_mmio_read(struct mic_mw *mw, u32 offset)
99 return ioread32(mw->va + offset);
103 * mic_mmio_write - write to an MMIO register.
104 * @mw: MMIO register base virtual address.
105 * @val: the data value to put into the register
106 * @offset: register offset.
111 mic_mmio_write(struct mic_mw *mw, u32 val, u32 offset)
113 iowrite32(val, mw->va + offset);
116 int mic_driver_init(struct mic_driver *mdrv);
117 void mic_driver_uninit(struct mic_driver *mdrv);
118 int mic_next_card_db(void);
119 struct mic_irq *mic_request_card_irq(irqreturn_t (*func)(int irq, void *data),
120 const char *name, void *data, int intr_src);
121 void mic_free_card_irq(struct mic_irq *cookie, void *data);
122 u32 mic_read_spad(struct mic_device *mdev, unsigned int idx);
123 void mic_send_intr(struct mic_device *mdev, int doorbell);
124 int mic_db_to_irq(struct mic_driver *mdrv, int db);
125 u32 mic_ack_interrupt(struct mic_device *mdev);
126 void mic_hw_intr_init(struct mic_driver *mdrv);
128 mic_card_map(struct mic_device *mdev, dma_addr_t addr, size_t size);
129 void mic_card_unmap(struct mic_device *mdev, void __iomem *addr);
130 void __init mic_create_card_debug_dir(struct mic_driver *mdrv);
131 void mic_delete_card_debug_dir(struct mic_driver *mdrv);
132 void __init mic_init_card_debugfs(void);
133 void mic_exit_card_debugfs(void);