1 /* $OpenBSD: sdmmcchip.h,v 1.3 2007/05/31 10:09:01 uwe Exp $ */
2
3 /*
4 * Copyright (c) 2006 Uwe Stuehler <uwe@openbsd.org>
5 *
6 * Permission to use, copy, modify, and distribute this software for any
7 * purpose with or without fee is hereby granted, provided that the above
8 * copyright notice and this permission notice appear in all copies.
9 *
10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 */
18
19 #ifndef _SDMMC_CHIP_H_
20 #define _SDMMC_CHIP_H_
21
22 struct sdmmc_command;
23
24 typedef struct sdmmc_chip_functions *sdmmc_chipset_tag_t;
25 typedef void *sdmmc_chipset_handle_t;
26
27 struct sdmmc_chip_functions {
28 /* host controller reset */
29 int (*host_reset)(sdmmc_chipset_handle_t);
30 /* host capabilities */
31 u_int32_t (*host_ocr)(sdmmc_chipset_handle_t);
32 int (*host_maxblklen)(sdmmc_chipset_handle_t);
33 /* card detection */
34 int (*card_detect)(sdmmc_chipset_handle_t);
35 /* bus power and clock frequency */
36 int (*bus_power)(sdmmc_chipset_handle_t, u_int32_t);
37 int (*bus_clock)(sdmmc_chipset_handle_t, int);
38 /* command execution */
39 void (*exec_command)(sdmmc_chipset_handle_t,
40 struct sdmmc_command *);
41 /* card interrupt */
42 void (*card_intr_mask)(sdmmc_chipset_handle_t, int);
43 void (*card_intr_ack)(sdmmc_chipset_handle_t);
44 };
45
46 /* host controller reset */
47 #define sdmmc_chip_host_reset(tag, handle) \
48 ((tag)->host_reset((handle)))
49 /* host capabilities */
50 #define sdmmc_chip_host_ocr(tag, handle) \
51 ((tag)->host_ocr((handle)))
52 #define sdmmc_chip_host_maxblklen(tag, handle) \
53 ((tag)->host_maxblklen((handle)))
54 /* card detection */
55 #define sdmmc_chip_card_detect(tag, handle) \
56 ((tag)->card_detect((handle)))
57 /* bus power and clock frequency */
58 #define sdmmc_chip_bus_power(tag, handle, ocr) \
59 ((tag)->bus_power((handle), (ocr)))
60 #define sdmmc_chip_bus_clock(tag, handle, freq) \
61 ((tag)->bus_clock((handle), (freq)))
62 /* command execution */
63 #define sdmmc_chip_exec_command(tag, handle, cmdp) \
64 ((tag)->exec_command((handle), (cmdp)))
65 /* card interrupt */
66 #define sdmmc_chip_card_intr_mask(tag, handle, enable) \
67 ((tag)->card_intr_mask((handle), (enable)))
68 #define sdmmc_chip_card_intr_ack(tag, handle) \
69 ((tag)->card_intr_ack((handle)))
70
71 /* clock frequencies for sdmmc_chip_bus_clock() */
72 #define SDMMC_SDCLK_OFF 0
73 #define SDMMC_SDCLK_400KHZ 400
74 #define SDMMC_SDCLK_25MHZ 25000
75
76 struct sdmmcbus_attach_args {
77 const char *saa_busname;
78 sdmmc_chipset_tag_t sct;
79 sdmmc_chipset_handle_t sch;
80 };
81
82 void sdmmc_needs_discover(struct device *);
83 void sdmmc_card_intr(struct device *);
84 void sdmmc_delay(u_int);
85
86 #endif