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>
21 struct pcmcia_low_level;
24 * This structure encapsulates per-socket state which we might need to
25 * use when responding to a Card Services query of some kind.
27 struct soc_pcmcia_socket {
28 struct pcmcia_socket socket;
31 * Info from low level handler
40 struct pcmcia_low_level *ops;
43 socket_state_t cs_state;
45 unsigned short spd_io[MAX_IO_WIN];
46 unsigned short spd_mem[MAX_WIN];
47 unsigned short spd_attr[MAX_WIN];
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;
55 unsigned int irq_state;
57 struct timer_list poll_timer;
58 struct list_head node;
63 struct soc_pcmcia_socket skt[0];
76 struct pcmcia_low_level {
79 /* first socket in system */
84 int (*hw_init)(struct soc_pcmcia_socket *);
85 void (*hw_shutdown)(struct soc_pcmcia_socket *);
87 void (*socket_state)(struct soc_pcmcia_socket *, struct pcmcia_state *);
88 int (*configure_socket)(struct soc_pcmcia_socket *, const socket_state_t *);
91 * Enable card status IRQs on (re-)initialisation. This can
92 * be called at initialisation, power management event, or
95 void (*socket_init)(struct soc_pcmcia_socket *);
98 * Disable card status IRQs and PCMCIA bus on suspend.
100 void (*socket_suspend)(struct soc_pcmcia_socket *);
103 * Hardware specific timing routines.
104 * If provided, the get_timing routine overrides the SOC default.
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 *);
110 #ifdef CONFIG_CPU_FREQ
114 int (*frequency_change)(struct soc_pcmcia_socket *, unsigned long, struct cpufreq_freqs *);
125 struct soc_pcmcia_timing {
131 extern int soc_pcmcia_request_irqs(struct soc_pcmcia_socket *skt, struct pcmcia_irqs *irqs, int nr);
132 extern void soc_pcmcia_free_irqs(struct soc_pcmcia_socket *skt, struct pcmcia_irqs *irqs, int nr);
133 extern void soc_pcmcia_disable_irqs(struct soc_pcmcia_socket *skt, struct pcmcia_irqs *irqs, int nr);
134 extern void soc_pcmcia_enable_irqs(struct soc_pcmcia_socket *skt, struct pcmcia_irqs *irqs, int nr);
135 extern void soc_common_pcmcia_get_timing(struct soc_pcmcia_socket *, struct soc_pcmcia_timing *);
138 extern struct list_head soc_pcmcia_sockets;
140 extern int soc_common_drv_pcmcia_probe(struct device *dev, struct pcmcia_low_level *ops, struct skt_dev_info *sinfo);
141 extern int soc_common_drv_pcmcia_remove(struct device *dev);
144 #ifdef CONFIG_PCMCIA_DEBUG
146 extern void soc_pcmcia_debug(struct soc_pcmcia_socket *skt, const char *func,
147 int lvl, const char *fmt, ...);
149 #define debug(skt, lvl, fmt, arg...) \
150 soc_pcmcia_debug(skt, __func__, lvl, fmt , ## arg)
153 #define debug(skt, lvl, fmt, arg...) do { } while (0)
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).
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.
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)
180 * The socket driver actually works nicely in interrupt-driven form,
181 * so the (relatively infrequent) polling is "just to be sure."
183 #define SOC_PCMCIA_POLL_PERIOD (2*HZ)
186 /* I/O pins replacing memory pins
187 * (PCMCIA System Architecture, 2nd ed., by Don Anderson, p.75)
189 * These signals change meaning when going from memory-only to
190 * memory-or-I/O interface:
192 #define iostschg bvd1