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 <linux/cpufreq.h>
14 #include <pcmcia/cs_types.h>
15 #include <pcmcia/cs.h>
16 #include <pcmcia/ss.h>
17 #include <pcmcia/cistpl.h>
18 #include "cs_internal.h"
22 struct pcmcia_low_level;
25 * This structure encapsulates per-socket state which we might need to
26 * use when responding to a Card Services query of some kind.
28 struct soc_pcmcia_socket {
29 struct pcmcia_socket socket;
32 * Info from low level handler
41 struct pcmcia_low_level *ops;
44 socket_state_t cs_state;
46 unsigned short spd_io[MAX_IO_WIN];
47 unsigned short spd_mem[MAX_WIN];
48 unsigned short spd_attr[MAX_WIN];
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;
56 unsigned int irq_state;
58 struct timer_list poll_timer;
59 struct list_head node;
72 struct pcmcia_low_level {
75 /* first socket in system */
80 int (*hw_init)(struct soc_pcmcia_socket *);
81 void (*hw_shutdown)(struct soc_pcmcia_socket *);
83 void (*socket_state)(struct soc_pcmcia_socket *, struct pcmcia_state *);
84 int (*configure_socket)(struct soc_pcmcia_socket *, const socket_state_t *);
87 * Enable card status IRQs on (re-)initialisation. This can
88 * be called at initialisation, power management event, or
91 void (*socket_init)(struct soc_pcmcia_socket *);
94 * Disable card status IRQs and PCMCIA bus on suspend.
96 void (*socket_suspend)(struct soc_pcmcia_socket *);
99 * Hardware specific timing routines.
100 * If provided, the get_timing routine overrides the SOC default.
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 *);
106 #ifdef CONFIG_CPU_FREQ
110 int (*frequency_change)(struct soc_pcmcia_socket *, unsigned long, struct cpufreq_freqs *);
121 struct soc_pcmcia_timing {
127 extern int soc_pcmcia_request_irqs(struct soc_pcmcia_socket *skt, struct pcmcia_irqs *irqs, int nr);
128 extern void soc_pcmcia_free_irqs(struct soc_pcmcia_socket *skt, struct pcmcia_irqs *irqs, int nr);
129 extern void soc_pcmcia_disable_irqs(struct soc_pcmcia_socket *skt, struct pcmcia_irqs *irqs, int nr);
130 extern void soc_pcmcia_enable_irqs(struct soc_pcmcia_socket *skt, struct pcmcia_irqs *irqs, int nr);
131 extern void soc_common_pcmcia_get_timing(struct soc_pcmcia_socket *, struct soc_pcmcia_timing *);
134 extern struct list_head soc_pcmcia_sockets;
136 extern int soc_common_drv_pcmcia_probe(struct device *dev, struct pcmcia_low_level *ops, int first, int nr);
137 extern int soc_common_drv_pcmcia_remove(struct device *dev);
142 extern void soc_pcmcia_debug(struct soc_pcmcia_socket *skt, const char *func,
143 int lvl, const char *fmt, ...);
145 #define debug(skt, lvl, fmt, arg...) \
146 soc_pcmcia_debug(skt, __func__, lvl, fmt , ## arg)
149 #define debug(skt, lvl, fmt, arg...) do { } while (0)
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).
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.
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)
176 * The socket driver actually works nicely in interrupt-driven form,
177 * so the (relatively infrequent) polling is "just to be sure."
179 #define SOC_PCMCIA_POLL_PERIOD (2*HZ)
182 /* I/O pins replacing memory pins
183 * (PCMCIA System Architecture, 2nd ed., by Don Anderson, p.75)
185 * These signals change meaning when going from memory-only to
186 * memory-or-I/O interface:
188 #define iostschg bvd1