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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * linux/drivers/pcmcia/soc_common.h
3 *
4 * Copyright (C) 2000 John G Dorsey <john+@cs.cmu.edu>
5 *
6 * This file contains definitions for the PCMCIA support code common to
7 * integrated SOCs like the SA-11x0 and PXA2xx microprocessors.
8 */
9#ifndef _ASM_ARCH_PCMCIA
10#define _ASM_ARCH_PCMCIA
11
12/* include the world */
13#include <linux/cpufreq.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070014#include <pcmcia/cs_types.h>
15#include <pcmcia/cs.h>
16#include <pcmcia/ss.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070017#include <pcmcia/cistpl.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070018
19
20struct device;
21struct pcmcia_low_level;
22
23/*
24 * This structure encapsulates per-socket state which we might need to
25 * use when responding to a Card Services query of some kind.
26 */
27struct soc_pcmcia_socket {
28 struct pcmcia_socket socket;
29
30 /*
31 * Info from low level handler
32 */
33 struct device *dev;
34 unsigned int nr;
35 unsigned int irq;
36
37 /*
38 * Core PCMCIA state
39 */
40 struct pcmcia_low_level *ops;
41
42 unsigned int status;
43 socket_state_t cs_state;
44
45 unsigned short spd_io[MAX_IO_WIN];
46 unsigned short spd_mem[MAX_WIN];
47 unsigned short spd_attr[MAX_WIN];
48
49 struct resource res_skt;
50 struct resource res_io;
51 struct resource res_mem;
52 struct resource res_attr;
53 void __iomem *virt_io;
54
55 unsigned int irq_state;
56
57 struct timer_list poll_timer;
58 struct list_head node;
59};
60
Eric Miaob393c692009-01-19 17:34:27 +080061struct skt_dev_info {
62 int nskt;
63 struct soc_pcmcia_socket skt[0];
64};
65
Linus Torvalds1da177e2005-04-16 15:20:36 -070066struct pcmcia_state {
67 unsigned detect: 1,
68 ready: 1,
69 bvd1: 1,
70 bvd2: 1,
71 wrprot: 1,
72 vs_3v: 1,
73 vs_Xv: 1;
74};
75
76struct pcmcia_low_level {
77 struct module *owner;
78
79 /* first socket in system */
80 int first;
81 /* nr of sockets */
82 int nr;
83
84 int (*hw_init)(struct soc_pcmcia_socket *);
85 void (*hw_shutdown)(struct soc_pcmcia_socket *);
86
87 void (*socket_state)(struct soc_pcmcia_socket *, struct pcmcia_state *);
88 int (*configure_socket)(struct soc_pcmcia_socket *, const socket_state_t *);
89
90 /*
91 * Enable card status IRQs on (re-)initialisation. This can
92 * be called at initialisation, power management event, or
93 * pcmcia event.
94 */
95 void (*socket_init)(struct soc_pcmcia_socket *);
96
97 /*
98 * Disable card status IRQs and PCMCIA bus on suspend.
99 */
100 void (*socket_suspend)(struct soc_pcmcia_socket *);
101
102 /*
103 * Hardware specific timing routines.
104 * If provided, the get_timing routine overrides the SOC default.
105 */
106 unsigned int (*get_timing)(struct soc_pcmcia_socket *, unsigned int, unsigned int);
107 int (*set_timing)(struct soc_pcmcia_socket *);
108 int (*show_timing)(struct soc_pcmcia_socket *, char *);
109
110#ifdef CONFIG_CPU_FREQ
111 /*
112 * CPUFREQ support.
113 */
114 int (*frequency_change)(struct soc_pcmcia_socket *, unsigned long, struct cpufreq_freqs *);
115#endif
116};
117
118
119struct pcmcia_irqs {
120 int sock;
121 int irq;
122 const char *str;
123};
124
125struct soc_pcmcia_timing {
126 unsigned short io;
127 unsigned short mem;
128 unsigned short attr;
129};
130
131extern int soc_pcmcia_request_irqs(struct soc_pcmcia_socket *skt, struct pcmcia_irqs *irqs, int nr);
132extern void soc_pcmcia_free_irqs(struct soc_pcmcia_socket *skt, struct pcmcia_irqs *irqs, int nr);
133extern void soc_pcmcia_disable_irqs(struct soc_pcmcia_socket *skt, struct pcmcia_irqs *irqs, int nr);
134extern void soc_pcmcia_enable_irqs(struct soc_pcmcia_socket *skt, struct pcmcia_irqs *irqs, int nr);
135extern void soc_common_pcmcia_get_timing(struct soc_pcmcia_socket *, struct soc_pcmcia_timing *);
136
137
138extern struct list_head soc_pcmcia_sockets;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700139
Eric Miaob393c692009-01-19 17:34:27 +0800140extern int soc_common_drv_pcmcia_probe(struct device *dev, struct pcmcia_low_level *ops, struct skt_dev_info *sinfo);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700141extern int soc_common_drv_pcmcia_remove(struct device *dev);
142
143
Dominik Brodowski7d16b652008-08-02 21:02:01 +0200144#ifdef CONFIG_PCMCIA_DEBUG
Linus Torvalds1da177e2005-04-16 15:20:36 -0700145
146extern void soc_pcmcia_debug(struct soc_pcmcia_socket *skt, const char *func,
147 int lvl, const char *fmt, ...);
148
149#define debug(skt, lvl, fmt, arg...) \
150 soc_pcmcia_debug(skt, __func__, lvl, fmt , ## arg)
151
152#else
153#define debug(skt, lvl, fmt, arg...) do { } while (0)
154#endif
155
156
157/*
158 * The PC Card Standard, Release 7, section 4.13.4, says that twIORD
159 * has a minimum value of 165ns. Section 4.13.5 says that twIOWR has
160 * a minimum value of 165ns, as well. Section 4.7.2 (describing
161 * common and attribute memory write timing) says that twWE has a
162 * minimum value of 150ns for a 250ns cycle time (for 5V operation;
163 * see section 4.7.4), or 300ns for a 600ns cycle time (for 3.3V
164 * operation, also section 4.7.4). Section 4.7.3 says that taOE
165 * has a maximum value of 150ns for a 300ns cycle time (for 5V
166 * operation), or 300ns for a 600ns cycle time (for 3.3V operation).
167 *
168 * When configuring memory maps, Card Services appears to adopt the policy
169 * that a memory access time of "0" means "use the default." The default
170 * PCMCIA I/O command width time is 165ns. The default PCMCIA 5V attribute
171 * and memory command width time is 150ns; the PCMCIA 3.3V attribute and
172 * memory command width time is 300ns.
173 */
174#define SOC_PCMCIA_IO_ACCESS (165)
175#define SOC_PCMCIA_5V_MEM_ACCESS (150)
176#define SOC_PCMCIA_3V_MEM_ACCESS (300)
177#define SOC_PCMCIA_ATTR_MEM_ACCESS (300)
178
179/*
180 * The socket driver actually works nicely in interrupt-driven form,
181 * so the (relatively infrequent) polling is "just to be sure."
182 */
183#define SOC_PCMCIA_POLL_PERIOD (2*HZ)
184
185
186/* I/O pins replacing memory pins
187 * (PCMCIA System Architecture, 2nd ed., by Don Anderson, p.75)
188 *
189 * These signals change meaning when going from memory-only to
190 * memory-or-I/O interface:
191 */
192#define iostschg bvd1
193#define iospkr bvd2
194
195#endif