1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
|
/*
* linux/drivers/pcmcia/soc_common.h
*
* Copyright (C) 2000 John G Dorsey <john+@cs.cmu.edu>
*
* This file contains definitions for the PCMCIA support code common to
* integrated SOCs like the SA-11x0 and PXA2xx microprocessors.
*/
#ifndef _ASM_ARCH_PCMCIA
#define _ASM_ARCH_PCMCIA
/* include the world */
#include <linux/cpufreq.h>
#include <pcmcia/ss.h>
#include <pcmcia/cistpl.h>
struct device;
struct pcmcia_low_level;
/*
* This structure encapsulates per-socket state which we might need to
* use when responding to a Card Services query of some kind.
*/
struct soc_pcmcia_socket {
struct pcmcia_socket socket;
/*
* Info from low level handler
*/
unsigned int nr;
/*
* Core PCMCIA state
*/
const struct pcmcia_low_level *ops;
unsigned int status;
socket_state_t cs_state;
unsigned short spd_io[MAX_IO_WIN];
unsigned short spd_mem[MAX_WIN];
unsigned short spd_attr[MAX_WIN];
struct resource res_skt;
struct resource res_io;
struct resource res_mem;
struct resource res_attr;
void __iomem *virt_io;
unsigned int irq_state;
struct timer_list poll_timer;
struct list_head node;
};
struct skt_dev_info {
int nskt;
struct soc_pcmcia_socket skt[0];
};
struct pcmcia_state {
unsigned detect: 1,
ready: 1,
bvd1: 1,
bvd2: 1,
wrprot: 1,
vs_3v: 1,
vs_Xv: 1;
};
struct pcmcia_low_level {
struct module *owner;
/* first socket in system */
int first;
/* nr of sockets */
int nr;
int (*hw_init)(struct soc_pcmcia_socket *);
void (*hw_shutdown)(struct soc_pcmcia_socket *);
void (*socket_state)(struct soc_pcmcia_socket *, struct pcmcia_state *);
int (*configure_socket)(struct soc_pcmcia_socket *, const socket_state_t *);
/*
* Enable card status IRQs on (re-)initialisation. This can
* be called at initialisation, power management event, or
* pcmcia event.
*/
void (*socket_init)(struct soc_pcmcia_socket *);
/*
* Disable card status IRQs and PCMCIA bus on suspend.
*/
void (*socket_suspend)(struct soc_pcmcia_socket *);
/*
* Hardware specific timing routines.
* If provided, the get_timing routine overrides the SOC default.
*/
unsigned int (*get_timing)(struct soc_pcmcia_socket *, unsigned int, unsigned int);
int (*set_timing)(struct soc_pcmcia_socket *);
int (*show_timing)(struct soc_pcmcia_socket *, char *);
#ifdef CONFIG_CPU_FREQ
/*
* CPUFREQ support.
*/
int (*frequency_change)(struct soc_pcmcia_socket *, unsigned long, struct cpufreq_freqs *);
#endif
};
struct pcmcia_irqs {
int sock;
int irq;
const char *str;
};
struct soc_pcmcia_timing {
unsigned short io;
unsigned short mem;
unsigned short attr;
};
extern int soc_pcmcia_request_irqs(struct soc_pcmcia_socket *skt, struct pcmcia_irqs *irqs, int nr);
extern void soc_pcmcia_free_irqs(struct soc_pcmcia_socket *skt, struct pcmcia_irqs *irqs, int nr);
extern void soc_pcmcia_disable_irqs(struct soc_pcmcia_socket *skt, struct pcmcia_irqs *irqs, int nr);
extern void soc_pcmcia_enable_irqs(struct soc_pcmcia_socket *skt, struct pcmcia_irqs *irqs, int nr);
extern void soc_common_pcmcia_get_timing(struct soc_pcmcia_socket *, struct soc_pcmcia_timing *);
void soc_pcmcia_remove_one(struct soc_pcmcia_socket *skt);
int soc_pcmcia_add_one(struct soc_pcmcia_socket *skt);
#ifdef CONFIG_PCMCIA_DEBUG
extern void soc_pcmcia_debug(struct soc_pcmcia_socket *skt, const char *func,
int lvl, const char *fmt, ...);
#define debug(skt, lvl, fmt, arg...) \
soc_pcmcia_debug(skt, __func__, lvl, fmt , ## arg)
#else
#define debug(skt, lvl, fmt, arg...) do { } while (0)
#endif
/*
* The PC Card Standard, Release 7, section 4.13.4, says that twIORD
* has a minimum value of 165ns. Section 4.13.5 says that twIOWR has
* a minimum value of 165ns, as well. Section 4.7.2 (describing
* common and attribute memory write timing) says that twWE has a
* minimum value of 150ns for a 250ns cycle time (for 5V operation;
* see section 4.7.4), or 300ns for a 600ns cycle time (for 3.3V
* operation, also section 4.7.4). Section 4.7.3 says that taOE
* has a maximum value of 150ns for a 300ns cycle time (for 5V
* operation), or 300ns for a 600ns cycle time (for 3.3V operation).
*
* When configuring memory maps, Card Services appears to adopt the policy
* that a memory access time of "0" means "use the default." The default
* PCMCIA I/O command width time is 165ns. The default PCMCIA 5V attribute
* and memory command width time is 150ns; the PCMCIA 3.3V attribute and
* memory command width time is 300ns.
*/
#define SOC_PCMCIA_IO_ACCESS (165)
#define SOC_PCMCIA_5V_MEM_ACCESS (150)
#define SOC_PCMCIA_3V_MEM_ACCESS (300)
#define SOC_PCMCIA_ATTR_MEM_ACCESS (300)
/*
* The socket driver actually works nicely in interrupt-driven form,
* so the (relatively infrequent) polling is "just to be sure."
*/
#define SOC_PCMCIA_POLL_PERIOD (2*HZ)
/* I/O pins replacing memory pins
* (PCMCIA System Architecture, 2nd ed., by Don Anderson, p.75)
*
* These signals change meaning when going from memory-only to
* memory-or-I/O interface:
*/
#define iostschg bvd1
#define iospkr bvd2
#endif
|
