2 * linux/drivers/pcmcia/soc_common.h
4 * Copyright (C) 2000 John G Dorsey <john+@cs.cmu.edu>
6 * This file contains definitions for the PCMCIA support code common to
7 * integrated SOCs like the SA-11x0 and PXA2xx microprocessors.
9 #ifndef _ASM_ARCH_PCMCIA
10 #define _ASM_ARCH_PCMCIA
12 /* include the world */
13 #include <pcmcia/version.h>
14 #include <pcmcia/cs_types.h>
15 #include <pcmcia/cs.h>
16 #include <pcmcia/ss.h>
17 #include <pcmcia/bulkmem.h>
18 #include <pcmcia/cistpl.h>
19 #include "cs_internal.h"
23 struct pcmcia_low_level;
26 * This structure encapsulates per-socket state which we might need to
27 * use when responding to a Card Services query of some kind.
29 struct soc_pcmcia_socket {
30 struct pcmcia_socket socket;
33 * Info from low level handler
42 struct pcmcia_low_level *ops;
45 socket_state_t cs_state;
47 unsigned short spd_io[MAX_IO_WIN];
48 unsigned short spd_mem[MAX_WIN];
49 unsigned short spd_attr[MAX_WIN];
51 struct resource res_skt;
52 struct resource res_io;
53 struct resource res_mem;
54 struct resource res_attr;
57 unsigned int irq_state;
59 struct timer_list poll_timer;
60 struct list_head node;
73 struct pcmcia_low_level {
76 /* first socket in system */
81 int (*hw_init)(struct soc_pcmcia_socket *);
82 void (*hw_shutdown)(struct soc_pcmcia_socket *);
84 void (*socket_state)(struct soc_pcmcia_socket *, struct pcmcia_state *);
85 int (*configure_socket)(struct soc_pcmcia_socket *, const socket_state_t *);
88 * Enable card status IRQs on (re-)initialisation. This can
89 * be called at initialisation, power management event, or
92 void (*socket_init)(struct soc_pcmcia_socket *);
95 * Disable card status IRQs and PCMCIA bus on suspend.
97 void (*socket_suspend)(struct soc_pcmcia_socket *);
100 * Hardware specific timing routines.
101 * If provided, the get_timing routine overrides the SOC default.
103 unsigned int (*get_timing)(struct soc_pcmcia_socket *, unsigned int, unsigned int);
104 int (*set_timing)(struct soc_pcmcia_socket *);
105 int (*show_timing)(struct soc_pcmcia_socket *, char *);
115 struct soc_pcmcia_timing {
121 extern int soc_pcmcia_request_irqs(struct soc_pcmcia_socket *skt, struct pcmcia_irqs *irqs, int nr);
122 extern void soc_pcmcia_free_irqs(struct soc_pcmcia_socket *skt, struct pcmcia_irqs *irqs, int nr);
123 extern void soc_pcmcia_disable_irqs(struct soc_pcmcia_socket *skt, struct pcmcia_irqs *irqs, int nr);
124 extern void soc_pcmcia_enable_irqs(struct soc_pcmcia_socket *skt, struct pcmcia_irqs *irqs, int nr);
125 extern void soc_common_pcmcia_get_timing(struct soc_pcmcia_socket *, struct soc_pcmcia_timing *);
128 extern struct list_head soc_pcmcia_sockets;
129 extern struct semaphore soc_pcmcia_sockets_lock;
131 extern int soc_common_drv_pcmcia_probe(struct device *dev, struct pcmcia_low_level *ops, int first, int nr);
132 extern int soc_common_drv_pcmcia_remove(struct device *dev);
137 extern void soc_pcmcia_debug(struct soc_pcmcia_socket *skt, const char *func,
138 int lvl, const char *fmt, ...);
140 #define debug(skt, lvl, fmt, arg...) \
141 soc_pcmcia_debug(skt, __func__, lvl, fmt , ## arg)
144 #define debug(skt, lvl, fmt, arg...) do { } while (0)
149 * The PC Card Standard, Release 7, section 4.13.4, says that twIORD
150 * has a minimum value of 165ns. Section 4.13.5 says that twIOWR has
151 * a minimum value of 165ns, as well. Section 4.7.2 (describing
152 * common and attribute memory write timing) says that twWE has a
153 * minimum value of 150ns for a 250ns cycle time (for 5V operation;
154 * see section 4.7.4), or 300ns for a 600ns cycle time (for 3.3V
155 * operation, also section 4.7.4). Section 4.7.3 says that taOE
156 * has a maximum value of 150ns for a 300ns cycle time (for 5V
157 * operation), or 300ns for a 600ns cycle time (for 3.3V operation).
159 * When configuring memory maps, Card Services appears to adopt the policy
160 * that a memory access time of "0" means "use the default." The default
161 * PCMCIA I/O command width time is 165ns. The default PCMCIA 5V attribute
162 * and memory command width time is 150ns; the PCMCIA 3.3V attribute and
163 * memory command width time is 300ns.
165 #define SOC_PCMCIA_IO_ACCESS (165)
166 #define SOC_PCMCIA_5V_MEM_ACCESS (150)
167 #define SOC_PCMCIA_3V_MEM_ACCESS (300)
168 #define SOC_PCMCIA_ATTR_MEM_ACCESS (300)
171 * The socket driver actually works nicely in interrupt-driven form,
172 * so the (relatively infrequent) polling is "just to be sure."
174 #define SOC_PCMCIA_POLL_PERIOD (2*HZ)
177 /* I/O pins replacing memory pins
178 * (PCMCIA System Architecture, 2nd ed., by Don Anderson, p.75)
180 * These signals change meaning when going from memory-only to
181 * memory-or-I/O interface:
183 #define iostschg bvd1