xref: /openbmc/linux/sound/pci/asihpi/hpicmn.h (revision cbdce7a3)
1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3 
4     AudioScience HPI driver
5     Copyright (C) 1997-2014  AudioScience Inc. <support@audioscience.com>
6 
7 
8 */
9 
10 struct hpi_adapter_obj;
11 
12 /* a function that takes an adapter obj and returns an int */
13 typedef int adapter_int_func(struct hpi_adapter_obj *pao, u32 message);
14 
15 #define HPI_IRQ_NONE		(0)
16 #define HPI_IRQ_MESSAGE		(1)
17 #define HPI_IRQ_MIXER		(2)
18 
19 struct hpi_adapter_obj {
20 	struct hpi_pci pci;	/* PCI info - bus#,dev#,address etc */
21 	u16 type;		/* 0x6644 == ASI6644 etc */
22 	u16 index;
23 
24 	struct hpios_spinlock dsp_lock;
25 
26 	u16 dsp_crashed;
27 	u16 has_control_cache;
28 	void *priv;
29 	adapter_int_func *irq_query_and_clear;
30 	struct hpi_hostbuffer_status *instream_host_buffer_status;
31 	struct hpi_hostbuffer_status *outstream_host_buffer_status;
32 };
33 
34 struct hpi_control_cache {
35 	/** indicates whether the structures are initialized */
36 	u16 init;
37 	u16 adap_idx;
38 	u32 control_count;
39 	u32 cache_size_in_bytes;
40 	/** pointer to allocated memory of lookup pointers. */
41 	struct hpi_control_cache_info **p_info;
42 	/** pointer to DSP's control cache. */
43 	u8 *p_cache;
44 };
45 
46 struct hpi_adapter_obj *hpi_find_adapter(u16 adapter_index);
47 
48 u16 hpi_add_adapter(struct hpi_adapter_obj *pao);
49 
50 void hpi_delete_adapter(struct hpi_adapter_obj *pao);
51 
52 short hpi_check_control_cache(struct hpi_control_cache *pC,
53 	struct hpi_message *phm, struct hpi_response *phr);
54 
55 short hpi_check_control_cache_single(struct hpi_control_cache_single *pC,
56 	struct hpi_message *phm, struct hpi_response *phr);
57 
58 struct hpi_control_cache *hpi_alloc_control_cache(const u32
59 	number_of_controls, const u32 size_in_bytes, u8 *pDSP_control_buffer);
60 
61 void hpi_free_control_cache(struct hpi_control_cache *p_cache);
62 
63 void hpi_cmn_control_cache_sync_to_msg(struct hpi_control_cache *pC,
64 	struct hpi_message *phm, struct hpi_response *phr);
65 
66 void hpi_cmn_control_cache_sync_to_msg_single(struct hpi_control_cache_single
67 	*pC, struct hpi_message *phm, struct hpi_response *phr);
68 
69 u16 hpi_validate_response(struct hpi_message *phm, struct hpi_response *phr);
70 
71 hpi_handler_func HPI_COMMON;
72