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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>
18#include "cs_internal.h"
19
20
21struct device;
22struct pcmcia_low_level;
23
24/*
25 * This structure encapsulates per-socket state which we might need to
26 * use when responding to a Card Services query of some kind.
27 */
28struct soc_pcmcia_socket {
29 struct pcmcia_socket socket;
30
31 /*
32 * Info from low level handler
33 */
34 struct device *dev;
35 unsigned int nr;
36 unsigned int irq;
37
38 /*
39 * Core PCMCIA state
40 */
41 struct pcmcia_low_level *ops;
42
43 unsigned int status;
44 socket_state_t cs_state;
45
46 unsigned short spd_io[MAX_IO_WIN];
47 unsigned short spd_mem[MAX_WIN];
48 unsigned short spd_attr[MAX_WIN];
49
50 struct resource res_skt;
51 struct resource res_io;
52 struct resource res_mem;
53 struct resource res_attr;
54 void __iomem *virt_io;
55
56 unsigned int irq_state;
57
58 struct timer_list poll_timer;
59 struct list_head node;
60};
61
62struct pcmcia_state {
63 unsigned detect: 1,
64 ready: 1,
65 bvd1: 1,
66 bvd2: 1,
67 wrprot: 1,
68 vs_3v: 1,
69 vs_Xv: 1;
70};
71
72struct pcmcia_low_level {
73 struct module *owner;
74
75 /* first socket in system */
76 int first;
77 /* nr of sockets */
78 int nr;
79
80 int (*hw_init)(struct soc_pcmcia_socket *);
81 void (*hw_shutdown)(struct soc_pcmcia_socket *);
82
83 void (*socket_state)(struct soc_pcmcia_socket *, struct pcmcia_state *);
84 int (*configure_socket)(struct soc_pcmcia_socket *, const socket_state_t *);
85
86 /*
87 * Enable card status IRQs on (re-)initialisation. This can
88 * be called at initialisation, power management event, or
89 * pcmcia event.
90 */
91 void (*socket_init)(struct soc_pcmcia_socket *);
92
93 /*
94 * Disable card status IRQs and PCMCIA bus on suspend.
95 */
96 void (*socket_suspend)(struct soc_pcmcia_socket *);
97
98 /*
99 * Hardware specific timing routines.
100 * If provided, the get_timing routine overrides the SOC default.
101 */
102 unsigned int (*get_timing)(struct soc_pcmcia_socket *, unsigned int, unsigned int);
103 int (*set_timing)(struct soc_pcmcia_socket *);
104 int (*show_timing)(struct soc_pcmcia_socket *, char *);
105
106#ifdef CONFIG_CPU_FREQ
107 /*
108 * CPUFREQ support.
109 */
110 int (*frequency_change)(struct soc_pcmcia_socket *, unsigned long, struct cpufreq_freqs *);
111#endif
112};
113
114
115struct pcmcia_irqs {
116 int sock;
117 int irq;
118 const char *str;
119};
120
121struct soc_pcmcia_timing {
122 unsigned short io;
123 unsigned short mem;
124 unsigned short attr;
125};
126
127extern int soc_pcmcia_request_irqs(struct soc_pcmcia_socket *skt, struct pcmcia_irqs *irqs, int nr);
128extern void soc_pcmcia_free_irqs(struct soc_pcmcia_socket *skt, struct pcmcia_irqs *irqs, int nr);
129extern void soc_pcmcia_disable_irqs(struct soc_pcmcia_socket *skt, struct pcmcia_irqs *irqs, int nr);
130extern void soc_pcmcia_enable_irqs(struct soc_pcmcia_socket *skt, struct pcmcia_irqs *irqs, int nr);
131extern void soc_common_pcmcia_get_timing(struct soc_pcmcia_socket *, struct soc_pcmcia_timing *);
132
133
134extern struct list_head soc_pcmcia_sockets;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700135
136extern int soc_common_drv_pcmcia_probe(struct device *dev, struct pcmcia_low_level *ops, int first, int nr);
137extern int soc_common_drv_pcmcia_remove(struct device *dev);
138
139
140#ifdef DEBUG
141
142extern void soc_pcmcia_debug(struct soc_pcmcia_socket *skt, const char *func,
143 int lvl, const char *fmt, ...);
144
145#define debug(skt, lvl, fmt, arg...) \
146 soc_pcmcia_debug(skt, __func__, lvl, fmt , ## arg)
147
148#else
149#define debug(skt, lvl, fmt, arg...) do { } while (0)
150#endif
151
152
153/*
154 * The PC Card Standard, Release 7, section 4.13.4, says that twIORD
155 * has a minimum value of 165ns. Section 4.13.5 says that twIOWR has
156 * a minimum value of 165ns, as well. Section 4.7.2 (describing
157 * common and attribute memory write timing) says that twWE has a
158 * minimum value of 150ns for a 250ns cycle time (for 5V operation;
159 * see section 4.7.4), or 300ns for a 600ns cycle time (for 3.3V
160 * operation, also section 4.7.4). Section 4.7.3 says that taOE
161 * has a maximum value of 150ns for a 300ns cycle time (for 5V
162 * operation), or 300ns for a 600ns cycle time (for 3.3V operation).
163 *
164 * When configuring memory maps, Card Services appears to adopt the policy
165 * that a memory access time of "0" means "use the default." The default
166 * PCMCIA I/O command width time is 165ns. The default PCMCIA 5V attribute
167 * and memory command width time is 150ns; the PCMCIA 3.3V attribute and
168 * memory command width time is 300ns.
169 */
170#define SOC_PCMCIA_IO_ACCESS (165)
171#define SOC_PCMCIA_5V_MEM_ACCESS (150)
172#define SOC_PCMCIA_3V_MEM_ACCESS (300)
173#define SOC_PCMCIA_ATTR_MEM_ACCESS (300)
174
175/*
176 * The socket driver actually works nicely in interrupt-driven form,
177 * so the (relatively infrequent) polling is "just to be sure."
178 */
179#define SOC_PCMCIA_POLL_PERIOD (2*HZ)
180
181
182/* I/O pins replacing memory pins
183 * (PCMCIA System Architecture, 2nd ed., by Don Anderson, p.75)
184 *
185 * These signals change meaning when going from memory-only to
186 * memory-or-I/O interface:
187 */
188#define iostschg bvd1
189#define iospkr bvd2
190
191#endif