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author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 22:20:36 (GMT) |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 22:20:36 (GMT) |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /drivers/pcmcia/soc_common.h | |
download | linux-fsl-qoriq-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.xz |
Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'drivers/pcmcia/soc_common.h')
-rw-r--r-- | drivers/pcmcia/soc_common.h | 194 |
1 files changed, 194 insertions, 0 deletions
diff --git a/drivers/pcmcia/soc_common.h b/drivers/pcmcia/soc_common.h new file mode 100644 index 0000000..700a155 --- /dev/null +++ b/drivers/pcmcia/soc_common.h @@ -0,0 +1,194 @@ +/* + * 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/version.h> +#include <pcmcia/cs_types.h> +#include <pcmcia/cs.h> +#include <pcmcia/ss.h> +#include <pcmcia/bulkmem.h> +#include <pcmcia/cistpl.h> +#include "cs_internal.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 + */ + struct device *dev; + unsigned int nr; + unsigned int irq; + + /* + * Core PCMCIA state + */ + 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 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 *); + + +extern struct list_head soc_pcmcia_sockets; +extern struct semaphore soc_pcmcia_sockets_lock; + +extern int soc_common_drv_pcmcia_probe(struct device *dev, struct pcmcia_low_level *ops, int first, int nr); +extern int soc_common_drv_pcmcia_remove(struct device *dev); + + +#ifdef 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 |