fix a kmap leak in virtio_console
[linux/fpc-iii.git] / drivers / pcmcia / soc_common.h
blobe6fcbea5b682e8574cf392dbadc8bd3f7df6e6b4
1 /*
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.
8 */
9 #ifndef _ASM_ARCH_PCMCIA
10 #define _ASM_ARCH_PCMCIA
12 /* include the world */
13 #include <linux/clk.h>
14 #include <linux/cpufreq.h>
15 #include <pcmcia/ss.h>
16 #include <pcmcia/cistpl.h>
19 struct device;
20 struct pcmcia_low_level;
23 * This structure encapsulates per-socket state which we might need to
24 * use when responding to a Card Services query of some kind.
26 struct soc_pcmcia_socket {
27 struct pcmcia_socket socket;
30 * Info from low level handler
32 unsigned int nr;
33 struct clk *clk;
36 * Core PCMCIA state
38 const struct pcmcia_low_level *ops;
40 unsigned int status;
41 socket_state_t cs_state;
43 unsigned short spd_io[MAX_IO_WIN];
44 unsigned short spd_mem[MAX_WIN];
45 unsigned short spd_attr[MAX_WIN];
47 struct resource res_skt;
48 struct resource res_io;
49 struct resource res_mem;
50 struct resource res_attr;
51 void __iomem *virt_io;
53 struct {
54 int gpio;
55 unsigned int irq;
56 const char *name;
57 } stat[4];
58 #define SOC_STAT_CD 0 /* Card detect */
59 #define SOC_STAT_BVD1 1 /* BATDEAD / IOSTSCHG */
60 #define SOC_STAT_BVD2 2 /* BATWARN / IOSPKR */
61 #define SOC_STAT_RDY 3 /* Ready / Interrupt */
63 unsigned int irq_state;
65 struct timer_list poll_timer;
66 struct list_head node;
69 struct skt_dev_info {
70 int nskt;
71 struct clk *clk;
72 struct soc_pcmcia_socket skt[0];
75 struct pcmcia_state {
76 unsigned detect: 1,
77 ready: 1,
78 bvd1: 1,
79 bvd2: 1,
80 wrprot: 1,
81 vs_3v: 1,
82 vs_Xv: 1;
85 struct pcmcia_low_level {
86 struct module *owner;
88 /* first socket in system */
89 int first;
90 /* nr of sockets */
91 int nr;
93 int (*hw_init)(struct soc_pcmcia_socket *);
94 void (*hw_shutdown)(struct soc_pcmcia_socket *);
96 void (*socket_state)(struct soc_pcmcia_socket *, struct pcmcia_state *);
97 int (*configure_socket)(struct soc_pcmcia_socket *, const socket_state_t *);
100 * Enable card status IRQs on (re-)initialisation. This can
101 * be called at initialisation, power management event, or
102 * pcmcia event.
104 void (*socket_init)(struct soc_pcmcia_socket *);
107 * Disable card status IRQs and PCMCIA bus on suspend.
109 void (*socket_suspend)(struct soc_pcmcia_socket *);
112 * Hardware specific timing routines.
113 * If provided, the get_timing routine overrides the SOC default.
115 unsigned int (*get_timing)(struct soc_pcmcia_socket *, unsigned int, unsigned int);
116 int (*set_timing)(struct soc_pcmcia_socket *);
117 int (*show_timing)(struct soc_pcmcia_socket *, char *);
119 #ifdef CONFIG_CPU_FREQ
121 * CPUFREQ support.
123 int (*frequency_change)(struct soc_pcmcia_socket *, unsigned long, struct cpufreq_freqs *);
124 #endif
128 struct soc_pcmcia_timing {
129 unsigned short io;
130 unsigned short mem;
131 unsigned short attr;
134 extern void soc_common_pcmcia_get_timing(struct soc_pcmcia_socket *, struct soc_pcmcia_timing *);
136 void soc_pcmcia_init_one(struct soc_pcmcia_socket *skt,
137 struct pcmcia_low_level *ops, struct device *dev);
138 void soc_pcmcia_remove_one(struct soc_pcmcia_socket *skt);
139 int soc_pcmcia_add_one(struct soc_pcmcia_socket *skt);
142 #ifdef CONFIG_PCMCIA_DEBUG
144 extern void soc_pcmcia_debug(struct soc_pcmcia_socket *skt, const char *func,
145 int lvl, const char *fmt, ...);
147 #define debug(skt, lvl, fmt, arg...) \
148 soc_pcmcia_debug(skt, __func__, lvl, fmt , ## arg)
150 #else
151 #define debug(skt, lvl, fmt, arg...) do { } while (0)
152 #endif
156 * The PC Card Standard, Release 7, section 4.13.4, says that twIORD
157 * has a minimum value of 165ns. Section 4.13.5 says that twIOWR has
158 * a minimum value of 165ns, as well. Section 4.7.2 (describing
159 * common and attribute memory write timing) says that twWE has a
160 * minimum value of 150ns for a 250ns cycle time (for 5V operation;
161 * see section 4.7.4), or 300ns for a 600ns cycle time (for 3.3V
162 * operation, also section 4.7.4). Section 4.7.3 says that taOE
163 * has a maximum value of 150ns for a 300ns cycle time (for 5V
164 * operation), or 300ns for a 600ns cycle time (for 3.3V operation).
166 * When configuring memory maps, Card Services appears to adopt the policy
167 * that a memory access time of "0" means "use the default." The default
168 * PCMCIA I/O command width time is 165ns. The default PCMCIA 5V attribute
169 * and memory command width time is 150ns; the PCMCIA 3.3V attribute and
170 * memory command width time is 300ns.
172 #define SOC_PCMCIA_IO_ACCESS (165)
173 #define SOC_PCMCIA_5V_MEM_ACCESS (150)
174 #define SOC_PCMCIA_3V_MEM_ACCESS (300)
175 #define SOC_PCMCIA_ATTR_MEM_ACCESS (300)
178 * The socket driver actually works nicely in interrupt-driven form,
179 * so the (relatively infrequent) polling is "just to be sure."
181 #define SOC_PCMCIA_POLL_PERIOD (2*HZ)
184 /* I/O pins replacing memory pins
185 * (PCMCIA System Architecture, 2nd ed., by Don Anderson, p.75)
187 * These signals change meaning when going from memory-only to
188 * memory-or-I/O interface:
190 #define iostschg bvd1
191 #define iospkr bvd2
193 #endif