1401 lines
		
	
	
	
		
			39 KiB
			
		
	
	
	
		
			C
		
	
	
	
	
	
			
		
		
	
	
			1401 lines
		
	
	
	
		
			39 KiB
			
		
	
	
	
		
			C
		
	
	
	
	
	
| /*
 | |
|  * Regular cardbus driver ("yenta_socket")
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|  *
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|  * (C) Copyright 1999, 2000 Linus Torvalds
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|  *
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|  * Changelog:
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|  * Aug 2002: Manfred Spraul <manfred@colorfullife.com>
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|  * 	Dynamically adjust the size of the bridge resource
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|  * 	
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|  * May 2003: Dominik Brodowski <linux@brodo.de>
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|  * 	Merge pci_socket.c and yenta.c into one file
 | |
|  */
 | |
| #include <linux/init.h>
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| #include <linux/pci.h>
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| #include <linux/workqueue.h>
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| #include <linux/interrupt.h>
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| #include <linux/delay.h>
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| #include <linux/module.h>
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| 
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| #include <pcmcia/cs_types.h>
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| #include <pcmcia/ss.h>
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| #include <pcmcia/cs.h>
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| 
 | |
| #include <asm/io.h>
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| 
 | |
| #include "yenta_socket.h"
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| #include "i82365.h"
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| 
 | |
| static int disable_clkrun;
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| module_param(disable_clkrun, bool, 0444);
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| MODULE_PARM_DESC(disable_clkrun, "If PC card doesn't function properly, please try this option");
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| 
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| static int isa_probe = 1;
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| module_param(isa_probe, bool, 0444);
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| MODULE_PARM_DESC(isa_probe, "If set ISA interrupts are probed (default). Set to N to disable probing");
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| 
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| static int pwr_irqs_off;
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| module_param(pwr_irqs_off, bool, 0644);
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| MODULE_PARM_DESC(pwr_irqs_off, "Force IRQs off during power-on of slot. Use only when seeing IRQ storms!");
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| 
 | |
| #define debug(x, s, args...) dev_dbg(&s->dev->dev, x, ##args)
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| 
 | |
| /* Don't ask.. */
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| #define to_cycles(ns)	((ns)/120)
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| #define to_ns(cycles)	((cycles)*120)
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| 
 | |
| /*
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|  * yenta PCI irq probing.
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|  * currently only used in the TI/EnE initialization code
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|  */
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| #ifdef CONFIG_YENTA_TI
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| static int yenta_probe_cb_irq(struct yenta_socket *socket);
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| #endif
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| 
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| 
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| static unsigned int override_bios;
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| module_param(override_bios, uint, 0000);
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| MODULE_PARM_DESC (override_bios, "yenta ignore bios resource allocation");
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| 
 | |
| /*
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|  * Generate easy-to-use ways of reading a cardbus sockets
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|  * regular memory space ("cb_xxx"), configuration space
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|  * ("config_xxx") and compatibility space ("exca_xxxx")
 | |
|  */
 | |
| static inline u32 cb_readl(struct yenta_socket *socket, unsigned reg)
 | |
| {
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| 	u32 val = readl(socket->base + reg);
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| 	debug("%04x %08x\n", socket, reg, val);
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| 	return val;
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| }
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| 
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| static inline void cb_writel(struct yenta_socket *socket, unsigned reg, u32 val)
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| {
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| 	debug("%04x %08x\n", socket, reg, val);
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| 	writel(val, socket->base + reg);
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| 	readl(socket->base + reg); /* avoid problems with PCI write posting */
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| }
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| 
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| static inline u8 config_readb(struct yenta_socket *socket, unsigned offset)
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| {
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| 	u8 val;
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| 	pci_read_config_byte(socket->dev, offset, &val);
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| 	debug("%04x %02x\n", socket, offset, val);
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| 	return val;
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| }
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| 
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| static inline u16 config_readw(struct yenta_socket *socket, unsigned offset)
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| {
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| 	u16 val;
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| 	pci_read_config_word(socket->dev, offset, &val);
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| 	debug("%04x %04x\n", socket, offset, val);
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| 	return val;
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| }
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| 
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| static inline u32 config_readl(struct yenta_socket *socket, unsigned offset)
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| {
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| 	u32 val;
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| 	pci_read_config_dword(socket->dev, offset, &val);
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| 	debug("%04x %08x\n", socket, offset, val);
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| 	return val;
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| }
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| 
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| static inline void config_writeb(struct yenta_socket *socket, unsigned offset, u8 val)
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| {
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| 	debug("%04x %02x\n", socket, offset, val);
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| 	pci_write_config_byte(socket->dev, offset, val);
 | |
| }
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| 
 | |
| static inline void config_writew(struct yenta_socket *socket, unsigned offset, u16 val)
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| {
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| 	debug("%04x %04x\n", socket, offset, val);
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| 	pci_write_config_word(socket->dev, offset, val);
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| }
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| 
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| static inline void config_writel(struct yenta_socket *socket, unsigned offset, u32 val)
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| {
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| 	debug("%04x %08x\n", socket, offset, val);
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| 	pci_write_config_dword(socket->dev, offset, val);
 | |
| }
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| 
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| static inline u8 exca_readb(struct yenta_socket *socket, unsigned reg)
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| {
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| 	u8 val = readb(socket->base + 0x800 + reg);
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| 	debug("%04x %02x\n", socket, reg, val);
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| 	return val;
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| }
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| 
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| static inline u8 exca_readw(struct yenta_socket *socket, unsigned reg)
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| {
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| 	u16 val;
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| 	val = readb(socket->base + 0x800 + reg);
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| 	val |= readb(socket->base + 0x800 + reg + 1) << 8;
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| 	debug("%04x %04x\n", socket, reg, val);
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| 	return val;
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| }
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| 
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| static inline void exca_writeb(struct yenta_socket *socket, unsigned reg, u8 val)
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| {
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| 	debug("%04x %02x\n", socket, reg, val);
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| 	writeb(val, socket->base + 0x800 + reg);
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| 	readb(socket->base + 0x800 + reg); /* PCI write posting... */
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| }
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| 
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| static void exca_writew(struct yenta_socket *socket, unsigned reg, u16 val)
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| {
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| 	debug("%04x %04x\n", socket, reg, val);
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| 	writeb(val, socket->base + 0x800 + reg);
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| 	writeb(val >> 8, socket->base + 0x800 + reg + 1);
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| 
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| 	/* PCI write posting... */
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| 	readb(socket->base + 0x800 + reg);
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| 	readb(socket->base + 0x800 + reg + 1);
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| }
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| 
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| static ssize_t show_yenta_registers(struct device *yentadev, struct device_attribute *attr, char *buf)
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| {
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| 	struct pci_dev *dev = to_pci_dev(yentadev);
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| 	struct yenta_socket *socket = pci_get_drvdata(dev);
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| 	int offset = 0, i;
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| 
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| 	offset = snprintf(buf, PAGE_SIZE, "CB registers:");
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| 	for (i = 0; i < 0x24; i += 4) {
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| 		unsigned val;
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| 		if (!(i & 15))
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| 			offset += snprintf(buf + offset, PAGE_SIZE - offset, "\n%02x:", i);
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| 		val = cb_readl(socket, i);
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| 		offset += snprintf(buf + offset, PAGE_SIZE - offset, " %08x", val);
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| 	}
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| 
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| 	offset += snprintf(buf + offset, PAGE_SIZE - offset, "\n\nExCA registers:");
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| 	for (i = 0; i < 0x45; i++) {
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| 		unsigned char val;
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| 		if (!(i & 7)) {
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| 			if (i & 8) {
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| 				memcpy(buf + offset, " -", 2);
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| 				offset += 2;
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| 			} else
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| 				offset += snprintf(buf + offset, PAGE_SIZE - offset, "\n%02x:", i);
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| 		}
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| 		val = exca_readb(socket, i);
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| 		offset += snprintf(buf + offset, PAGE_SIZE - offset, " %02x", val);
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| 	}
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| 	buf[offset++] = '\n';
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| 	return offset;
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| }
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| 
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| static DEVICE_ATTR(yenta_registers, S_IRUSR, show_yenta_registers, NULL);
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| 
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| /*
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|  * Ugh, mixed-mode cardbus and 16-bit pccard state: things depend
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|  * on what kind of card is inserted..
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|  */
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| static int yenta_get_status(struct pcmcia_socket *sock, unsigned int *value)
 | |
| {
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| 	struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);
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| 	unsigned int val;
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| 	u32 state = cb_readl(socket, CB_SOCKET_STATE);
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| 
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| 	val  = (state & CB_3VCARD) ? SS_3VCARD : 0;
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| 	val |= (state & CB_XVCARD) ? SS_XVCARD : 0;
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| 	val |= (state & (CB_5VCARD | CB_3VCARD | CB_XVCARD | CB_YVCARD)) ? 0 : SS_PENDING;
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| 	val |= (state & (CB_CDETECT1 | CB_CDETECT2)) ? SS_PENDING : 0;
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| 
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| 
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| 	if (state & CB_CBCARD) {
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| 		val |= SS_CARDBUS;
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| 		val |= (state & CB_CARDSTS) ? SS_STSCHG : 0;
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| 		val |= (state & (CB_CDETECT1 | CB_CDETECT2)) ? 0 : SS_DETECT;
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| 		val |= (state & CB_PWRCYCLE) ? SS_POWERON | SS_READY : 0;
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| 	} else if (state & CB_16BITCARD) {
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| 		u8 status = exca_readb(socket, I365_STATUS);
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| 		val |= ((status & I365_CS_DETECT) == I365_CS_DETECT) ? SS_DETECT : 0;
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| 		if (exca_readb(socket, I365_INTCTL) & I365_PC_IOCARD) {
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| 			val |= (status & I365_CS_STSCHG) ? 0 : SS_STSCHG;
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| 		} else {
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| 			val |= (status & I365_CS_BVD1) ? 0 : SS_BATDEAD;
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| 			val |= (status & I365_CS_BVD2) ? 0 : SS_BATWARN;
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| 		}
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| 		val |= (status & I365_CS_WRPROT) ? SS_WRPROT : 0;
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| 		val |= (status & I365_CS_READY) ? SS_READY : 0;
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| 		val |= (status & I365_CS_POWERON) ? SS_POWERON : 0;
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| 	}
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| 
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| 	*value = val;
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| 	return 0;
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| }
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| 
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| static void yenta_set_power(struct yenta_socket *socket, socket_state_t *state)
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| {
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| 	/* some birdges require to use the ExCA registers to power 16bit cards */
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| 	if (!(cb_readl(socket, CB_SOCKET_STATE) & CB_CBCARD) &&
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| 	    (socket->flags & YENTA_16BIT_POWER_EXCA)) {
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| 		u8 reg, old;
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| 		reg = old = exca_readb(socket, I365_POWER);
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| 		reg &= ~(I365_VCC_MASK | I365_VPP1_MASK | I365_VPP2_MASK);
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| 
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| 		/* i82365SL-DF style */
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| 		if (socket->flags & YENTA_16BIT_POWER_DF) {
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| 			switch (state->Vcc) {
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| 			case 33: reg |= I365_VCC_3V; break;
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| 			case 50: reg |= I365_VCC_5V; break;
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| 			default: reg = 0; break;
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| 			}
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| 			switch (state->Vpp) {
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| 			case 33:
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| 			case 50: reg |= I365_VPP1_5V; break;
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| 			case 120: reg |= I365_VPP1_12V; break;
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| 			}
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| 		} else {
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| 			/* i82365SL-B style */
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| 			switch (state->Vcc) {
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| 			case 50: reg |= I365_VCC_5V; break;
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| 			default: reg = 0; break;
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| 			}
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| 			switch (state->Vpp) {
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| 			case 50: reg |= I365_VPP1_5V | I365_VPP2_5V; break;
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| 			case 120: reg |= I365_VPP1_12V | I365_VPP2_12V; break;
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| 			}
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| 		}
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| 
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| 		if (reg != old)
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| 			exca_writeb(socket, I365_POWER, reg);
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| 	} else {
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| 		u32 reg = 0;	/* CB_SC_STPCLK? */
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| 		switch (state->Vcc) {
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| 		case 33: reg = CB_SC_VCC_3V; break;
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| 		case 50: reg = CB_SC_VCC_5V; break;
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| 		default: reg = 0; break;
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| 		}
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| 		switch (state->Vpp) {
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| 		case 33:  reg |= CB_SC_VPP_3V; break;
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| 		case 50:  reg |= CB_SC_VPP_5V; break;
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| 		case 120: reg |= CB_SC_VPP_12V; break;
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| 		}
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| 		if (reg != cb_readl(socket, CB_SOCKET_CONTROL))
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| 			cb_writel(socket, CB_SOCKET_CONTROL, reg);
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| 	}
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| }
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| 
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| static int yenta_set_socket(struct pcmcia_socket *sock, socket_state_t *state)
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| {
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| 	struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);
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| 	u16 bridge;
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| 
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| 	/* if powering down: do it immediately */
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| 	if (state->Vcc == 0)
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| 		yenta_set_power(socket, state);
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| 
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| 	socket->io_irq = state->io_irq;
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| 	bridge = config_readw(socket, CB_BRIDGE_CONTROL) & ~(CB_BRIDGE_CRST | CB_BRIDGE_INTR);
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| 	if (cb_readl(socket, CB_SOCKET_STATE) & CB_CBCARD) {
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| 		u8 intr;
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| 		bridge |= (state->flags & SS_RESET) ? CB_BRIDGE_CRST : 0;
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| 
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| 		/* ISA interrupt control? */
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| 		intr = exca_readb(socket, I365_INTCTL);
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| 		intr = (intr & ~0xf);
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| 		if (!socket->cb_irq) {
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| 			intr |= state->io_irq;
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| 			bridge |= CB_BRIDGE_INTR;
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| 		}
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| 		exca_writeb(socket, I365_INTCTL, intr);
 | |
| 	}  else {
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| 		u8 reg;
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| 
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| 		reg = exca_readb(socket, I365_INTCTL) & (I365_RING_ENA | I365_INTR_ENA);
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| 		reg |= (state->flags & SS_RESET) ? 0 : I365_PC_RESET;
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| 		reg |= (state->flags & SS_IOCARD) ? I365_PC_IOCARD : 0;
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| 		if (state->io_irq != socket->cb_irq) {
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| 			reg |= state->io_irq;
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| 			bridge |= CB_BRIDGE_INTR;
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| 		}
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| 		exca_writeb(socket, I365_INTCTL, reg);
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| 
 | |
| 		reg = exca_readb(socket, I365_POWER) & (I365_VCC_MASK|I365_VPP1_MASK);
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| 		reg |= I365_PWR_NORESET;
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| 		if (state->flags & SS_PWR_AUTO) reg |= I365_PWR_AUTO;
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| 		if (state->flags & SS_OUTPUT_ENA) reg |= I365_PWR_OUT;
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| 		if (exca_readb(socket, I365_POWER) != reg)
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| 			exca_writeb(socket, I365_POWER, reg);
 | |
| 
 | |
| 		/* CSC interrupt: no ISA irq for CSC */
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| 		reg = I365_CSC_DETECT;
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| 		if (state->flags & SS_IOCARD) {
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| 			if (state->csc_mask & SS_STSCHG) reg |= I365_CSC_STSCHG;
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| 		} else {
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| 			if (state->csc_mask & SS_BATDEAD) reg |= I365_CSC_BVD1;
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| 			if (state->csc_mask & SS_BATWARN) reg |= I365_CSC_BVD2;
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| 			if (state->csc_mask & SS_READY) reg |= I365_CSC_READY;
 | |
| 		}
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| 		exca_writeb(socket, I365_CSCINT, reg);
 | |
| 		exca_readb(socket, I365_CSC);
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| 		if(sock->zoom_video)
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| 			sock->zoom_video(sock, state->flags & SS_ZVCARD);
 | |
| 	}
 | |
| 	config_writew(socket, CB_BRIDGE_CONTROL, bridge);
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| 	/* Socket event mask: get card insert/remove events.. */
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| 	cb_writel(socket, CB_SOCKET_EVENT, -1);
 | |
| 	cb_writel(socket, CB_SOCKET_MASK, CB_CDMASK);
 | |
| 
 | |
| 	/* if powering up: do it as the last step when the socket is configured */
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| 	if (state->Vcc != 0)
 | |
| 		yenta_set_power(socket, state);
 | |
| 	return 0;
 | |
| }
 | |
| 
 | |
| static int yenta_set_io_map(struct pcmcia_socket *sock, struct pccard_io_map *io)
 | |
| {
 | |
| 	struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);
 | |
| 	int map;
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| 	unsigned char ioctl, addr, enable;
 | |
| 
 | |
| 	map = io->map;
 | |
| 
 | |
| 	if (map > 1)
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| 		return -EINVAL;
 | |
| 
 | |
| 	enable = I365_ENA_IO(map);
 | |
| 	addr = exca_readb(socket, I365_ADDRWIN);
 | |
| 
 | |
| 	/* Disable the window before changing it.. */
 | |
| 	if (addr & enable) {
 | |
| 		addr &= ~enable;
 | |
| 		exca_writeb(socket, I365_ADDRWIN, addr);
 | |
| 	}
 | |
| 
 | |
| 	exca_writew(socket, I365_IO(map)+I365_W_START, io->start);
 | |
| 	exca_writew(socket, I365_IO(map)+I365_W_STOP, io->stop);
 | |
| 
 | |
| 	ioctl = exca_readb(socket, I365_IOCTL) & ~I365_IOCTL_MASK(map);
 | |
| 	if (io->flags & MAP_0WS) ioctl |= I365_IOCTL_0WS(map);
 | |
| 	if (io->flags & MAP_16BIT) ioctl |= I365_IOCTL_16BIT(map);
 | |
| 	if (io->flags & MAP_AUTOSZ) ioctl |= I365_IOCTL_IOCS16(map);
 | |
| 	exca_writeb(socket, I365_IOCTL, ioctl);
 | |
| 
 | |
| 	if (io->flags & MAP_ACTIVE)
 | |
| 		exca_writeb(socket, I365_ADDRWIN, addr | enable);
 | |
| 	return 0;
 | |
| }
 | |
| 
 | |
| static int yenta_set_mem_map(struct pcmcia_socket *sock, struct pccard_mem_map *mem)
 | |
| {
 | |
| 	struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);
 | |
| 	struct pci_bus_region region;
 | |
| 	int map;
 | |
| 	unsigned char addr, enable;
 | |
| 	unsigned int start, stop, card_start;
 | |
| 	unsigned short word;
 | |
| 
 | |
| 	pcibios_resource_to_bus(socket->dev, ®ion, mem->res);
 | |
| 
 | |
| 	map = mem->map;
 | |
| 	start = region.start;
 | |
| 	stop = region.end;
 | |
| 	card_start = mem->card_start;
 | |
| 
 | |
| 	if (map > 4 || start > stop || ((start ^ stop) >> 24) ||
 | |
| 	    (card_start >> 26) || mem->speed > 1000)
 | |
| 		return -EINVAL;
 | |
| 
 | |
| 	enable = I365_ENA_MEM(map);
 | |
| 	addr = exca_readb(socket, I365_ADDRWIN);
 | |
| 	if (addr & enable) {
 | |
| 		addr &= ~enable;
 | |
| 		exca_writeb(socket, I365_ADDRWIN, addr);
 | |
| 	}
 | |
| 
 | |
| 	exca_writeb(socket, CB_MEM_PAGE(map), start >> 24);
 | |
| 
 | |
| 	word = (start >> 12) & 0x0fff;
 | |
| 	if (mem->flags & MAP_16BIT)
 | |
| 		word |= I365_MEM_16BIT;
 | |
| 	if (mem->flags & MAP_0WS)
 | |
| 		word |= I365_MEM_0WS;
 | |
| 	exca_writew(socket, I365_MEM(map) + I365_W_START, word);
 | |
| 
 | |
| 	word = (stop >> 12) & 0x0fff;
 | |
| 	switch (to_cycles(mem->speed)) {
 | |
| 		case 0: break;
 | |
| 		case 1:  word |= I365_MEM_WS0; break;
 | |
| 		case 2:  word |= I365_MEM_WS1; break;
 | |
| 		default: word |= I365_MEM_WS1 | I365_MEM_WS0; break;
 | |
| 	}
 | |
| 	exca_writew(socket, I365_MEM(map) + I365_W_STOP, word);
 | |
| 
 | |
| 	word = ((card_start - start) >> 12) & 0x3fff;
 | |
| 	if (mem->flags & MAP_WRPROT)
 | |
| 		word |= I365_MEM_WRPROT;
 | |
| 	if (mem->flags & MAP_ATTRIB)
 | |
| 		word |= I365_MEM_REG;
 | |
| 	exca_writew(socket, I365_MEM(map) + I365_W_OFF, word);
 | |
| 
 | |
| 	if (mem->flags & MAP_ACTIVE)
 | |
| 		exca_writeb(socket, I365_ADDRWIN, addr | enable);
 | |
| 	return 0;
 | |
| }
 | |
| 
 | |
| 
 | |
| 
 | |
| static irqreturn_t yenta_interrupt(int irq, void *dev_id)
 | |
| {
 | |
| 	unsigned int events;
 | |
| 	struct yenta_socket *socket = (struct yenta_socket *) dev_id;
 | |
| 	u8 csc;
 | |
| 	u32 cb_event;
 | |
| 
 | |
| 	/* Clear interrupt status for the event */
 | |
| 	cb_event = cb_readl(socket, CB_SOCKET_EVENT);
 | |
| 	cb_writel(socket, CB_SOCKET_EVENT, cb_event);
 | |
| 
 | |
| 	csc = exca_readb(socket, I365_CSC);
 | |
| 
 | |
| 	if (!(cb_event || csc))
 | |
| 		return IRQ_NONE;
 | |
| 
 | |
| 	events = (cb_event & (CB_CD1EVENT | CB_CD2EVENT)) ? SS_DETECT : 0 ;
 | |
| 	events |= (csc & I365_CSC_DETECT) ? SS_DETECT : 0;
 | |
| 	if (exca_readb(socket, I365_INTCTL) & I365_PC_IOCARD) {
 | |
| 		events |= (csc & I365_CSC_STSCHG) ? SS_STSCHG : 0;
 | |
| 	} else {
 | |
| 		events |= (csc & I365_CSC_BVD1) ? SS_BATDEAD : 0;
 | |
| 		events |= (csc & I365_CSC_BVD2) ? SS_BATWARN : 0;
 | |
| 		events |= (csc & I365_CSC_READY) ? SS_READY : 0;
 | |
| 	}
 | |
| 
 | |
| 	if (events)
 | |
| 		pcmcia_parse_events(&socket->socket, events);
 | |
| 
 | |
| 	return IRQ_HANDLED;
 | |
| }
 | |
| 
 | |
| static void yenta_interrupt_wrapper(unsigned long data)
 | |
| {
 | |
| 	struct yenta_socket *socket = (struct yenta_socket *) data;
 | |
| 
 | |
| 	yenta_interrupt(0, (void *)socket);
 | |
| 	socket->poll_timer.expires = jiffies + HZ;
 | |
| 	add_timer(&socket->poll_timer);
 | |
| }
 | |
| 
 | |
| static void yenta_clear_maps(struct yenta_socket *socket)
 | |
| {
 | |
| 	int i;
 | |
| 	struct resource res = { .start = 0, .end = 0x0fff };
 | |
| 	pccard_io_map io = { 0, 0, 0, 0, 1 };
 | |
| 	pccard_mem_map mem = { .res = &res, };
 | |
| 
 | |
| 	yenta_set_socket(&socket->socket, &dead_socket);
 | |
| 	for (i = 0; i < 2; i++) {
 | |
| 		io.map = i;
 | |
| 		yenta_set_io_map(&socket->socket, &io);
 | |
| 	}
 | |
| 	for (i = 0; i < 5; i++) {
 | |
| 		mem.map = i;
 | |
| 		yenta_set_mem_map(&socket->socket, &mem);
 | |
| 	}
 | |
| }
 | |
| 
 | |
| /* redoes voltage interrogation if required */
 | |
| static void yenta_interrogate(struct yenta_socket *socket)
 | |
| {
 | |
| 	u32 state;
 | |
| 
 | |
| 	state = cb_readl(socket, CB_SOCKET_STATE);
 | |
| 	if (!(state & (CB_5VCARD | CB_3VCARD | CB_XVCARD | CB_YVCARD)) ||
 | |
| 	    (state & (CB_CDETECT1 | CB_CDETECT2 | CB_NOTACARD | CB_BADVCCREQ)) ||
 | |
| 	    ((state & (CB_16BITCARD | CB_CBCARD)) == (CB_16BITCARD | CB_CBCARD)))
 | |
| 		cb_writel(socket, CB_SOCKET_FORCE, CB_CVSTEST);
 | |
| }
 | |
| 
 | |
| /* Called at resume and initialization events */
 | |
| static int yenta_sock_init(struct pcmcia_socket *sock)
 | |
| {
 | |
| 	struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);
 | |
| 
 | |
| 	exca_writeb(socket, I365_GBLCTL, 0x00);
 | |
| 	exca_writeb(socket, I365_GENCTL, 0x00);
 | |
| 
 | |
| 	/* Redo card voltage interrogation */
 | |
| 	yenta_interrogate(socket);
 | |
| 
 | |
| 	yenta_clear_maps(socket);
 | |
| 
 | |
| 	if (socket->type && socket->type->sock_init)
 | |
| 		socket->type->sock_init(socket);
 | |
| 
 | |
| 	/* Re-enable CSC interrupts */
 | |
| 	cb_writel(socket, CB_SOCKET_MASK, CB_CDMASK);
 | |
| 
 | |
| 	return 0;
 | |
| }
 | |
| 
 | |
| static int yenta_sock_suspend(struct pcmcia_socket *sock)
 | |
| {
 | |
| 	struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);
 | |
| 
 | |
| 	/* Disable CSC interrupts */
 | |
| 	cb_writel(socket, CB_SOCKET_MASK, 0x0);
 | |
| 
 | |
| 	return 0;
 | |
| }
 | |
| 
 | |
| /*
 | |
|  * Use an adaptive allocation for the memory resource,
 | |
|  * sometimes the memory behind pci bridges is limited:
 | |
|  * 1/8 of the size of the io window of the parent.
 | |
|  * max 4 MB, min 16 kB. We try very hard to not get below
 | |
|  * the "ACC" values, though.
 | |
|  */
 | |
| #define BRIDGE_MEM_MAX 4*1024*1024
 | |
| #define BRIDGE_MEM_ACC 128*1024
 | |
| #define BRIDGE_MEM_MIN 16*1024
 | |
| 
 | |
| #define BRIDGE_IO_MAX 512
 | |
| #define BRIDGE_IO_ACC 256
 | |
| #define BRIDGE_IO_MIN 32
 | |
| 
 | |
| #ifndef PCIBIOS_MIN_CARDBUS_IO
 | |
| #define PCIBIOS_MIN_CARDBUS_IO PCIBIOS_MIN_IO
 | |
| #endif
 | |
| 
 | |
| static int yenta_search_one_res(struct resource *root, struct resource *res,
 | |
| 				u32 min)
 | |
| {
 | |
| 	u32 align, size, start, end;
 | |
| 
 | |
| 	if (res->flags & IORESOURCE_IO) {
 | |
| 		align = 1024;
 | |
| 		size = BRIDGE_IO_MAX;
 | |
| 		start = PCIBIOS_MIN_CARDBUS_IO;
 | |
| 		end = ~0U;
 | |
| 	} else {
 | |
| 		unsigned long avail = root->end - root->start;
 | |
| 		int i;
 | |
| 		size = BRIDGE_MEM_MAX;
 | |
| 		if (size > avail/8) {
 | |
| 			size=(avail+1)/8;
 | |
| 			/* round size down to next power of 2 */
 | |
| 			i = 0;
 | |
| 			while ((size /= 2) != 0)
 | |
| 				i++;
 | |
| 			size = 1 << i;
 | |
| 		}
 | |
| 		if (size < min)
 | |
| 			size = min;
 | |
| 		align = size;
 | |
| 		start = PCIBIOS_MIN_MEM;
 | |
| 		end = ~0U;
 | |
| 	}
 | |
| 
 | |
| 	do {
 | |
| 		if (allocate_resource(root, res, size, start, end, align,
 | |
| 				      NULL, NULL)==0) {
 | |
| 			return 1;
 | |
| 		}
 | |
| 		size = size/2;
 | |
| 		align = size;
 | |
| 	} while (size >= min);
 | |
| 
 | |
| 	return 0;
 | |
| }
 | |
| 
 | |
| 
 | |
| static int yenta_search_res(struct yenta_socket *socket, struct resource *res,
 | |
| 			    u32 min)
 | |
| {
 | |
| 	int i;
 | |
| 	for (i=0; i<PCI_BUS_NUM_RESOURCES; i++) {
 | |
| 		struct resource * root = socket->dev->bus->resource[i];
 | |
| 		if (!root)
 | |
| 			continue;
 | |
| 
 | |
| 		if ((res->flags ^ root->flags) &
 | |
| 		    (IORESOURCE_IO | IORESOURCE_MEM | IORESOURCE_PREFETCH))
 | |
| 			continue; /* Wrong type */
 | |
| 
 | |
| 		if (yenta_search_one_res(root, res, min))
 | |
| 			return 1;
 | |
| 	}
 | |
| 	return 0;
 | |
| }
 | |
| 
 | |
| static int yenta_allocate_res(struct yenta_socket *socket, int nr, unsigned type, int addr_start, int addr_end)
 | |
| {
 | |
| 	struct resource *root, *res;
 | |
| 	struct pci_bus_region region;
 | |
| 	unsigned mask;
 | |
| 
 | |
| 	res = socket->dev->resource + PCI_BRIDGE_RESOURCES + nr;
 | |
| 	/* Already allocated? */
 | |
| 	if (res->parent)
 | |
| 		return 0;
 | |
| 
 | |
| 	/* The granularity of the memory limit is 4kB, on IO it's 4 bytes */
 | |
| 	mask = ~0xfff;
 | |
| 	if (type & IORESOURCE_IO)
 | |
| 		mask = ~3;
 | |
| 
 | |
| 	res->name = socket->dev->subordinate->name;
 | |
| 	res->flags = type;
 | |
| 
 | |
| 	region.start = config_readl(socket, addr_start) & mask;
 | |
| 	region.end = config_readl(socket, addr_end) | ~mask;
 | |
| 	if (region.start && region.end > region.start && !override_bios) {
 | |
| 		pcibios_bus_to_resource(socket->dev, res, ®ion);
 | |
| 		root = pci_find_parent_resource(socket->dev, res);
 | |
| 		if (root && (request_resource(root, res) == 0))
 | |
| 			return 0;
 | |
| 		dev_printk(KERN_INFO, &socket->dev->dev,
 | |
| 			   "Preassigned resource %d busy or not available, "
 | |
| 			   "reconfiguring...\n",
 | |
| 			   nr);
 | |
| 	}
 | |
| 
 | |
| 	if (type & IORESOURCE_IO) {
 | |
| 		if ((yenta_search_res(socket, res, BRIDGE_IO_MAX)) ||
 | |
| 		    (yenta_search_res(socket, res, BRIDGE_IO_ACC)) ||
 | |
| 		    (yenta_search_res(socket, res, BRIDGE_IO_MIN)))
 | |
| 			return 1;
 | |
| 	} else {
 | |
| 		if (type & IORESOURCE_PREFETCH) {
 | |
| 			if ((yenta_search_res(socket, res, BRIDGE_MEM_MAX)) ||
 | |
| 			    (yenta_search_res(socket, res, BRIDGE_MEM_ACC)) ||
 | |
| 			    (yenta_search_res(socket, res, BRIDGE_MEM_MIN)))
 | |
| 				return 1;
 | |
| 			/* Approximating prefetchable by non-prefetchable */
 | |
| 			res->flags = IORESOURCE_MEM;
 | |
| 		}
 | |
| 		if ((yenta_search_res(socket, res, BRIDGE_MEM_MAX)) ||
 | |
| 		    (yenta_search_res(socket, res, BRIDGE_MEM_ACC)) ||
 | |
| 		    (yenta_search_res(socket, res, BRIDGE_MEM_MIN)))
 | |
| 			return 1;
 | |
| 	}
 | |
| 
 | |
| 	dev_printk(KERN_INFO, &socket->dev->dev,
 | |
| 		   "no resource of type %x available, trying to continue...\n",
 | |
| 		   type);
 | |
| 	res->start = res->end = res->flags = 0;
 | |
| 	return 0;
 | |
| }
 | |
| 
 | |
| /*
 | |
|  * Allocate the bridge mappings for the device..
 | |
|  */
 | |
| static void yenta_allocate_resources(struct yenta_socket *socket)
 | |
| {
 | |
| 	int program = 0;
 | |
| 	program += yenta_allocate_res(socket, 0, IORESOURCE_IO,
 | |
| 			   PCI_CB_IO_BASE_0, PCI_CB_IO_LIMIT_0);
 | |
| 	program += yenta_allocate_res(socket, 1, IORESOURCE_IO,
 | |
| 			   PCI_CB_IO_BASE_1, PCI_CB_IO_LIMIT_1);
 | |
| 	program += yenta_allocate_res(socket, 2, IORESOURCE_MEM|IORESOURCE_PREFETCH,
 | |
| 			   PCI_CB_MEMORY_BASE_0, PCI_CB_MEMORY_LIMIT_0);
 | |
| 	program += yenta_allocate_res(socket, 3, IORESOURCE_MEM,
 | |
| 			   PCI_CB_MEMORY_BASE_1, PCI_CB_MEMORY_LIMIT_1);
 | |
| 	if (program)
 | |
| 		pci_setup_cardbus(socket->dev->subordinate);
 | |
| }
 | |
| 
 | |
| 
 | |
| /*
 | |
|  * Free the bridge mappings for the device..
 | |
|  */
 | |
| static void yenta_free_resources(struct yenta_socket *socket)
 | |
| {
 | |
| 	int i;
 | |
| 	for (i=0;i<4;i++) {
 | |
| 		struct resource *res;
 | |
| 		res = socket->dev->resource + PCI_BRIDGE_RESOURCES + i;
 | |
| 		if (res->start != 0 && res->end != 0)
 | |
| 			release_resource(res);
 | |
| 		res->start = res->end = res->flags = 0;
 | |
| 	}
 | |
| }
 | |
| 
 | |
| 
 | |
| /*
 | |
|  * Close it down - release our resources and go home..
 | |
|  */
 | |
| static void yenta_close(struct pci_dev *dev)
 | |
| {
 | |
| 	struct yenta_socket *sock = pci_get_drvdata(dev);
 | |
| 
 | |
| 	/* Remove the register attributes */
 | |
| 	device_remove_file(&dev->dev, &dev_attr_yenta_registers);
 | |
| 
 | |
| 	/* we don't want a dying socket registered */
 | |
| 	pcmcia_unregister_socket(&sock->socket);
 | |
| 	
 | |
| 	/* Disable all events so we don't die in an IRQ storm */
 | |
| 	cb_writel(sock, CB_SOCKET_MASK, 0x0);
 | |
| 	exca_writeb(sock, I365_CSCINT, 0);
 | |
| 
 | |
| 	if (sock->cb_irq)
 | |
| 		free_irq(sock->cb_irq, sock);
 | |
| 	else
 | |
| 		del_timer_sync(&sock->poll_timer);
 | |
| 
 | |
| 	if (sock->base)
 | |
| 		iounmap(sock->base);
 | |
| 	yenta_free_resources(sock);
 | |
| 
 | |
| 	pci_release_regions(dev);
 | |
| 	pci_disable_device(dev);
 | |
| 	pci_set_drvdata(dev, NULL);
 | |
| }
 | |
| 
 | |
| 
 | |
| static struct pccard_operations yenta_socket_operations = {
 | |
| 	.init			= yenta_sock_init,
 | |
| 	.suspend		= yenta_sock_suspend,
 | |
| 	.get_status		= yenta_get_status,
 | |
| 	.set_socket		= yenta_set_socket,
 | |
| 	.set_io_map		= yenta_set_io_map,
 | |
| 	.set_mem_map		= yenta_set_mem_map,
 | |
| };
 | |
| 
 | |
| 
 | |
| #ifdef CONFIG_YENTA_TI
 | |
| #include "ti113x.h"
 | |
| #endif
 | |
| #ifdef CONFIG_YENTA_RICOH
 | |
| #include "ricoh.h"
 | |
| #endif
 | |
| #ifdef CONFIG_YENTA_TOSHIBA
 | |
| #include "topic.h"
 | |
| #endif
 | |
| #ifdef CONFIG_YENTA_O2
 | |
| #include "o2micro.h"
 | |
| #endif
 | |
| 
 | |
| enum {
 | |
| 	CARDBUS_TYPE_DEFAULT = -1,
 | |
| 	CARDBUS_TYPE_TI,
 | |
| 	CARDBUS_TYPE_TI113X,
 | |
| 	CARDBUS_TYPE_TI12XX,
 | |
| 	CARDBUS_TYPE_TI1250,
 | |
| 	CARDBUS_TYPE_RICOH,
 | |
| 	CARDBUS_TYPE_TOPIC95,
 | |
| 	CARDBUS_TYPE_TOPIC97,
 | |
| 	CARDBUS_TYPE_O2MICRO,
 | |
| 	CARDBUS_TYPE_ENE,
 | |
| };
 | |
| 
 | |
| /*
 | |
|  * Different cardbus controllers have slightly different
 | |
|  * initialization sequences etc details. List them here..
 | |
|  */
 | |
| static struct cardbus_type cardbus_type[] = {
 | |
| #ifdef CONFIG_YENTA_TI
 | |
| 	[CARDBUS_TYPE_TI]	= {
 | |
| 		.override	= ti_override,
 | |
| 		.save_state	= ti_save_state,
 | |
| 		.restore_state	= ti_restore_state,
 | |
| 		.sock_init	= ti_init,
 | |
| 	},
 | |
| 	[CARDBUS_TYPE_TI113X]	= {
 | |
| 		.override	= ti113x_override,
 | |
| 		.save_state	= ti_save_state,
 | |
| 		.restore_state	= ti_restore_state,
 | |
| 		.sock_init	= ti_init,
 | |
| 	},
 | |
| 	[CARDBUS_TYPE_TI12XX]	= {
 | |
| 		.override	= ti12xx_override,
 | |
| 		.save_state	= ti_save_state,
 | |
| 		.restore_state	= ti_restore_state,
 | |
| 		.sock_init	= ti_init,
 | |
| 	},
 | |
| 	[CARDBUS_TYPE_TI1250]	= {
 | |
| 		.override	= ti1250_override,
 | |
| 		.save_state	= ti_save_state,
 | |
| 		.restore_state	= ti_restore_state,
 | |
| 		.sock_init	= ti_init,
 | |
| 	},
 | |
| #endif
 | |
| #ifdef CONFIG_YENTA_RICOH
 | |
| 	[CARDBUS_TYPE_RICOH]	= {
 | |
| 		.override	= ricoh_override,
 | |
| 		.save_state	= ricoh_save_state,
 | |
| 		.restore_state	= ricoh_restore_state,
 | |
| 	},
 | |
| #endif
 | |
| #ifdef CONFIG_YENTA_TOSHIBA
 | |
| 	[CARDBUS_TYPE_TOPIC95]	= {
 | |
| 		.override	= topic95_override,
 | |
| 	},
 | |
| 	[CARDBUS_TYPE_TOPIC97]	= {
 | |
| 		.override	= topic97_override,
 | |
| 	},
 | |
| #endif
 | |
| #ifdef CONFIG_YENTA_O2
 | |
| 	[CARDBUS_TYPE_O2MICRO]	= {
 | |
| 		.override	= o2micro_override,
 | |
| 		.restore_state	= o2micro_restore_state,
 | |
| 	},
 | |
| #endif
 | |
| #ifdef CONFIG_YENTA_TI
 | |
| 	[CARDBUS_TYPE_ENE]	= {
 | |
| 		.override	= ene_override,
 | |
| 		.save_state	= ti_save_state,
 | |
| 		.restore_state	= ti_restore_state,
 | |
| 		.sock_init	= ti_init,
 | |
| 	},
 | |
| #endif
 | |
| };
 | |
| 
 | |
| 
 | |
| /*
 | |
|  * Only probe "regular" interrupts, don't
 | |
|  * touch dangerous spots like the mouse irq,
 | |
|  * because there are mice that apparently
 | |
|  * get really confused if they get fondled
 | |
|  * too intimately.
 | |
|  *
 | |
|  * Default to 11, 10, 9, 7, 6, 5, 4, 3.
 | |
|  */
 | |
| static u32 isa_interrupts = 0x0ef8;
 | |
| 
 | |
| static unsigned int yenta_probe_irq(struct yenta_socket *socket, u32 isa_irq_mask)
 | |
| {
 | |
| 	int i;
 | |
| 	unsigned long val;
 | |
| 	u32 mask;
 | |
| 
 | |
| 	/*
 | |
| 	 * Probe for usable interrupts using the force
 | |
| 	 * register to generate bogus card status events.
 | |
| 	 */
 | |
| 	cb_writel(socket, CB_SOCKET_EVENT, -1);
 | |
| 	cb_writel(socket, CB_SOCKET_MASK, CB_CSTSMASK);
 | |
| 	exca_writeb(socket, I365_CSCINT, 0);
 | |
| 	val = probe_irq_on() & isa_irq_mask;
 | |
| 	for (i = 1; i < 16; i++) {
 | |
| 		if (!((val >> i) & 1))
 | |
| 			continue;
 | |
| 		exca_writeb(socket, I365_CSCINT, I365_CSC_STSCHG | (i << 4));
 | |
| 		cb_writel(socket, CB_SOCKET_FORCE, CB_FCARDSTS);
 | |
| 		udelay(100);
 | |
| 		cb_writel(socket, CB_SOCKET_EVENT, -1);
 | |
| 	}
 | |
| 	cb_writel(socket, CB_SOCKET_MASK, 0);
 | |
| 	exca_writeb(socket, I365_CSCINT, 0);
 | |
| 
 | |
| 	mask = probe_irq_mask(val) & 0xffff;
 | |
| 
 | |
| 	return mask;
 | |
| }
 | |
| 
 | |
| 
 | |
| /*
 | |
|  * yenta PCI irq probing.
 | |
|  * currently only used in the TI/EnE initialization code
 | |
|  */
 | |
| #ifdef CONFIG_YENTA_TI
 | |
| 
 | |
| /* interrupt handler, only used during probing */
 | |
| static irqreturn_t yenta_probe_handler(int irq, void *dev_id)
 | |
| {
 | |
| 	struct yenta_socket *socket = (struct yenta_socket *) dev_id;
 | |
| 	u8 csc;
 | |
|         u32 cb_event;
 | |
| 
 | |
| 	/* Clear interrupt status for the event */
 | |
| 	cb_event = cb_readl(socket, CB_SOCKET_EVENT);
 | |
| 	cb_writel(socket, CB_SOCKET_EVENT, -1);
 | |
| 	csc = exca_readb(socket, I365_CSC);
 | |
| 
 | |
| 	if (cb_event || csc) {
 | |
| 		socket->probe_status = 1;
 | |
| 		return IRQ_HANDLED;
 | |
| 	}
 | |
| 
 | |
| 	return IRQ_NONE;
 | |
| }
 | |
| 
 | |
| /* probes the PCI interrupt, use only on override functions */
 | |
| static int yenta_probe_cb_irq(struct yenta_socket *socket)
 | |
| {
 | |
| 	if (!socket->cb_irq)
 | |
| 		return -1;
 | |
| 
 | |
| 	socket->probe_status = 0;
 | |
| 
 | |
| 	if (request_irq(socket->cb_irq, yenta_probe_handler, IRQF_SHARED, "yenta", socket)) {
 | |
| 		dev_printk(KERN_WARNING, &socket->dev->dev,
 | |
| 			   "request_irq() in yenta_probe_cb_irq() failed!\n");
 | |
| 		return -1;
 | |
| 	}
 | |
| 
 | |
| 	/* generate interrupt, wait */
 | |
| 	exca_writeb(socket, I365_CSCINT, I365_CSC_STSCHG);
 | |
| 	cb_writel(socket, CB_SOCKET_EVENT, -1);
 | |
| 	cb_writel(socket, CB_SOCKET_MASK, CB_CSTSMASK);
 | |
| 	cb_writel(socket, CB_SOCKET_FORCE, CB_FCARDSTS);
 | |
| 
 | |
| 	msleep(100);
 | |
| 
 | |
| 	/* disable interrupts */
 | |
| 	cb_writel(socket, CB_SOCKET_MASK, 0);
 | |
| 	exca_writeb(socket, I365_CSCINT, 0);
 | |
| 	cb_writel(socket, CB_SOCKET_EVENT, -1);
 | |
| 	exca_readb(socket, I365_CSC);
 | |
| 
 | |
| 	free_irq(socket->cb_irq, socket);
 | |
| 
 | |
| 	return (int) socket->probe_status;
 | |
| }
 | |
| 
 | |
| #endif /* CONFIG_YENTA_TI */
 | |
| 
 | |
| 
 | |
| /*
 | |
|  * Set static data that doesn't need re-initializing..
 | |
|  */
 | |
| static void yenta_get_socket_capabilities(struct yenta_socket *socket, u32 isa_irq_mask)
 | |
| {
 | |
| 	socket->socket.pci_irq = socket->cb_irq;
 | |
| 	if (isa_probe)
 | |
| 		socket->socket.irq_mask = yenta_probe_irq(socket, isa_irq_mask);
 | |
| 	else
 | |
| 		socket->socket.irq_mask = 0;
 | |
| 
 | |
| 	dev_printk(KERN_INFO, &socket->dev->dev,
 | |
| 		   "ISA IRQ mask 0x%04x, PCI irq %d\n",
 | |
| 		   socket->socket.irq_mask, socket->cb_irq);
 | |
| }
 | |
| 
 | |
| /*
 | |
|  * Initialize the standard cardbus registers
 | |
|  */
 | |
| static void yenta_config_init(struct yenta_socket *socket)
 | |
| {
 | |
| 	u16 bridge;
 | |
| 	struct pci_dev *dev = socket->dev;
 | |
| 	struct pci_bus_region region;
 | |
| 
 | |
| 	pcibios_resource_to_bus(socket->dev, ®ion, &dev->resource[0]);
 | |
| 
 | |
| 	config_writel(socket, CB_LEGACY_MODE_BASE, 0);
 | |
| 	config_writel(socket, PCI_BASE_ADDRESS_0, region.start);
 | |
| 	config_writew(socket, PCI_COMMAND,
 | |
| 			PCI_COMMAND_IO |
 | |
| 			PCI_COMMAND_MEMORY |
 | |
| 			PCI_COMMAND_MASTER |
 | |
| 			PCI_COMMAND_WAIT);
 | |
| 
 | |
| 	/* MAGIC NUMBERS! Fixme */
 | |
| 	config_writeb(socket, PCI_CACHE_LINE_SIZE, L1_CACHE_BYTES / 4);
 | |
| 	config_writeb(socket, PCI_LATENCY_TIMER, 168);
 | |
| 	config_writel(socket, PCI_PRIMARY_BUS,
 | |
| 		(176 << 24) |			   /* sec. latency timer */
 | |
| 		(dev->subordinate->subordinate << 16) | /* subordinate bus */
 | |
| 		(dev->subordinate->secondary << 8) |  /* secondary bus */
 | |
| 		dev->subordinate->primary);		   /* primary bus */
 | |
| 
 | |
| 	/*
 | |
| 	 * Set up the bridging state:
 | |
| 	 *  - enable write posting.
 | |
| 	 *  - memory window 0 prefetchable, window 1 non-prefetchable
 | |
| 	 *  - PCI interrupts enabled if a PCI interrupt exists..
 | |
| 	 */
 | |
| 	bridge = config_readw(socket, CB_BRIDGE_CONTROL);
 | |
| 	bridge &= ~(CB_BRIDGE_CRST | CB_BRIDGE_PREFETCH1 | CB_BRIDGE_ISAEN | CB_BRIDGE_VGAEN);
 | |
| 	bridge |= CB_BRIDGE_PREFETCH0 | CB_BRIDGE_POSTEN;
 | |
| 	config_writew(socket, CB_BRIDGE_CONTROL, bridge);
 | |
| }
 | |
| 
 | |
| /**
 | |
|  * yenta_fixup_parent_bridge - Fix subordinate bus# of the parent bridge
 | |
|  * @cardbus_bridge: The PCI bus which the CardBus bridge bridges to
 | |
|  *
 | |
|  * Checks if devices on the bus which the CardBus bridge bridges to would be
 | |
|  * invisible during PCI scans because of a misconfigured subordinate number
 | |
|  * of the parent brige - some BIOSes seem to be too lazy to set it right.
 | |
|  * Does the fixup carefully by checking how far it can go without conflicts.
 | |
|  * See http\://bugzilla.kernel.org/show_bug.cgi?id=2944 for more information.
 | |
|  */
 | |
| static void yenta_fixup_parent_bridge(struct pci_bus *cardbus_bridge)
 | |
| {
 | |
| 	struct list_head *tmp;
 | |
| 	unsigned char upper_limit;
 | |
|  	/*
 | |
| 	 * We only check and fix the parent bridge: All systems which need
 | |
| 	 * this fixup that have been reviewed are laptops and the only bridge
 | |
| 	 * which needed fixing was the parent bridge of the CardBus bridge:
 | |
| 	 */
 | |
| 	struct pci_bus *bridge_to_fix = cardbus_bridge->parent;
 | |
| 
 | |
| 	/* Check bus numbers are already set up correctly: */
 | |
| 	if (bridge_to_fix->subordinate >= cardbus_bridge->subordinate)
 | |
| 		return; /* The subordinate number is ok, nothing to do */
 | |
| 
 | |
| 	if (!bridge_to_fix->parent)
 | |
| 		return; /* Root bridges are ok */
 | |
| 
 | |
| 	/* stay within the limits of the bus range of the parent: */
 | |
| 	upper_limit = bridge_to_fix->parent->subordinate;
 | |
| 
 | |
| 	/* check the bus ranges of all silbling bridges to prevent overlap */
 | |
| 	list_for_each(tmp, &bridge_to_fix->parent->children) {
 | |
| 		struct pci_bus * silbling = pci_bus_b(tmp);
 | |
| 		/*
 | |
| 		 * If the silbling has a higher secondary bus number
 | |
| 		 * and it's secondary is equal or smaller than our
 | |
| 		 * current upper limit, set the new upper limit to
 | |
| 		 * the bus number below the silbling's range:
 | |
| 		 */
 | |
| 		if (silbling->secondary > bridge_to_fix->subordinate
 | |
| 		    && silbling->secondary <= upper_limit)
 | |
| 			upper_limit = silbling->secondary - 1;
 | |
| 	}
 | |
| 
 | |
| 	/* Show that the wanted subordinate number is not possible: */
 | |
| 	if (cardbus_bridge->subordinate > upper_limit)
 | |
| 		dev_printk(KERN_WARNING, &cardbus_bridge->dev,
 | |
| 			   "Upper limit for fixing this "
 | |
| 			   "bridge's parent bridge: #%02x\n", upper_limit);
 | |
| 
 | |
| 	/* If we have room to increase the bridge's subordinate number, */
 | |
| 	if (bridge_to_fix->subordinate < upper_limit) {
 | |
| 
 | |
| 		/* use the highest number of the hidden bus, within limits */
 | |
| 		unsigned char subordinate_to_assign =
 | |
| 			min(cardbus_bridge->subordinate, upper_limit);
 | |
| 
 | |
| 		dev_printk(KERN_INFO, &bridge_to_fix->dev,
 | |
| 			   "Raising subordinate bus# of parent "
 | |
| 			   "bus (#%02x) from #%02x to #%02x\n",
 | |
| 			   bridge_to_fix->number,
 | |
| 			   bridge_to_fix->subordinate, subordinate_to_assign);
 | |
| 
 | |
| 		/* Save the new subordinate in the bus struct of the bridge */
 | |
| 		bridge_to_fix->subordinate = subordinate_to_assign;
 | |
| 
 | |
| 		/* and update the PCI config space with the new subordinate */
 | |
| 		pci_write_config_byte(bridge_to_fix->self,
 | |
| 			PCI_SUBORDINATE_BUS, bridge_to_fix->subordinate);
 | |
| 	}
 | |
| }
 | |
| 
 | |
| /*
 | |
|  * Initialize a cardbus controller. Make sure we have a usable
 | |
|  * interrupt, and that we can map the cardbus area. Fill in the
 | |
|  * socket information structure..
 | |
|  */
 | |
| static int __devinit yenta_probe (struct pci_dev *dev, const struct pci_device_id *id)
 | |
| {
 | |
| 	struct yenta_socket *socket;
 | |
| 	int ret;
 | |
| 
 | |
| 	/*
 | |
| 	 * If we failed to assign proper bus numbers for this cardbus
 | |
| 	 * controller during PCI probe, its subordinate pci_bus is NULL.
 | |
| 	 * Bail out if so.
 | |
| 	 */
 | |
| 	if (!dev->subordinate) {
 | |
| 		dev_printk(KERN_ERR, &dev->dev, "no bus associated! "
 | |
| 			   "(try 'pci=assign-busses')\n");
 | |
| 		return -ENODEV;
 | |
| 	}
 | |
| 
 | |
| 	socket = kzalloc(sizeof(struct yenta_socket), GFP_KERNEL);
 | |
| 	if (!socket)
 | |
| 		return -ENOMEM;
 | |
| 
 | |
| 	/* prepare pcmcia_socket */
 | |
| 	socket->socket.ops = ¥ta_socket_operations;
 | |
| 	socket->socket.resource_ops = &pccard_nonstatic_ops;
 | |
| 	socket->socket.dev.parent = &dev->dev;
 | |
| 	socket->socket.driver_data = socket;
 | |
| 	socket->socket.owner = THIS_MODULE;
 | |
| 	socket->socket.features = SS_CAP_PAGE_REGS | SS_CAP_PCCARD;
 | |
| 	socket->socket.map_size = 0x1000;
 | |
| 	socket->socket.cb_dev = dev;
 | |
| 
 | |
| 	/* prepare struct yenta_socket */
 | |
| 	socket->dev = dev;
 | |
| 	pci_set_drvdata(dev, socket);
 | |
| 
 | |
| 	/*
 | |
| 	 * Do some basic sanity checking..
 | |
| 	 */
 | |
| 	if (pci_enable_device(dev)) {
 | |
| 		ret = -EBUSY;
 | |
| 		goto free;
 | |
| 	}
 | |
| 
 | |
| 	ret = pci_request_regions(dev, "yenta_socket");
 | |
| 	if (ret)
 | |
| 		goto disable;
 | |
| 
 | |
| 	if (!pci_resource_start(dev, 0)) {
 | |
| 		dev_printk(KERN_ERR, &dev->dev, "No cardbus resource!\n");
 | |
| 		ret = -ENODEV;
 | |
| 		goto release;
 | |
| 	}
 | |
| 
 | |
| 	/*
 | |
| 	 * Ok, start setup.. Map the cardbus registers,
 | |
| 	 * and request the IRQ.
 | |
| 	 */
 | |
| 	socket->base = ioremap(pci_resource_start(dev, 0), 0x1000);
 | |
| 	if (!socket->base) {
 | |
| 		ret = -ENOMEM;
 | |
| 		goto release;
 | |
| 	}
 | |
| 
 | |
| 	/*
 | |
| 	 * report the subsystem vendor and device for help debugging
 | |
| 	 * the irq stuff...
 | |
| 	 */
 | |
| 	dev_printk(KERN_INFO, &dev->dev, "CardBus bridge found [%04x:%04x]\n",
 | |
| 		   dev->subsystem_vendor, dev->subsystem_device);
 | |
| 
 | |
| 	yenta_config_init(socket);
 | |
| 
 | |
| 	/* Disable all events */
 | |
| 	cb_writel(socket, CB_SOCKET_MASK, 0x0);
 | |
| 
 | |
| 	/* Set up the bridge regions.. */
 | |
| 	yenta_allocate_resources(socket);
 | |
| 
 | |
| 	socket->cb_irq = dev->irq;
 | |
| 
 | |
| 	/* Do we have special options for the device? */
 | |
| 	if (id->driver_data != CARDBUS_TYPE_DEFAULT &&
 | |
| 	    id->driver_data < ARRAY_SIZE(cardbus_type)) {
 | |
| 		socket->type = &cardbus_type[id->driver_data];
 | |
| 
 | |
| 		ret = socket->type->override(socket);
 | |
| 		if (ret < 0)
 | |
| 			goto unmap;
 | |
| 	}
 | |
| 
 | |
| 	/* We must finish initialization here */
 | |
| 
 | |
| 	if (!socket->cb_irq || request_irq(socket->cb_irq, yenta_interrupt, IRQF_SHARED, "yenta", socket)) {
 | |
| 		/* No IRQ or request_irq failed. Poll */
 | |
| 		socket->cb_irq = 0; /* But zero is a valid IRQ number. */
 | |
| 		init_timer(&socket->poll_timer);
 | |
| 		socket->poll_timer.function = yenta_interrupt_wrapper;
 | |
| 		socket->poll_timer.data = (unsigned long)socket;
 | |
| 		socket->poll_timer.expires = jiffies + HZ;
 | |
| 		add_timer(&socket->poll_timer);
 | |
| 		dev_printk(KERN_INFO, &dev->dev,
 | |
| 			   "no PCI IRQ, CardBus support disabled for this "
 | |
| 			   "socket.\n");
 | |
| 		dev_printk(KERN_INFO, &dev->dev,
 | |
| 			   "check your BIOS CardBus, BIOS IRQ or ACPI "
 | |
| 			   "settings.\n");
 | |
| 	} else {
 | |
| 		socket->socket.features |= SS_CAP_CARDBUS;
 | |
| 	}
 | |
| 
 | |
| 	/* Figure out what the dang thing can do for the PCMCIA layer... */
 | |
| 	yenta_interrogate(socket);
 | |
| 	yenta_get_socket_capabilities(socket, isa_interrupts);
 | |
| 	dev_printk(KERN_INFO, &dev->dev,
 | |
| 		   "Socket status: %08x\n", cb_readl(socket, CB_SOCKET_STATE));
 | |
| 
 | |
| 	yenta_fixup_parent_bridge(dev->subordinate);
 | |
| 
 | |
| 	/* Register it with the pcmcia layer.. */
 | |
| 	ret = pcmcia_register_socket(&socket->socket);
 | |
| 	if (ret == 0) {
 | |
| 		/* Add the yenta register attributes */
 | |
| 		ret = device_create_file(&dev->dev, &dev_attr_yenta_registers);
 | |
| 		if (ret == 0)
 | |
| 			goto out;
 | |
| 
 | |
| 		/* error path... */
 | |
| 		pcmcia_unregister_socket(&socket->socket);
 | |
| 	}
 | |
| 
 | |
|  unmap:
 | |
| 	iounmap(socket->base);
 | |
|  release:
 | |
| 	pci_release_regions(dev);
 | |
|  disable:
 | |
| 	pci_disable_device(dev);
 | |
|  free:
 | |
| 	kfree(socket);
 | |
|  out:
 | |
| 	return ret;
 | |
| }
 | |
| 
 | |
| #ifdef CONFIG_PM
 | |
| static int yenta_dev_suspend (struct pci_dev *dev, pm_message_t state)
 | |
| {
 | |
| 	struct yenta_socket *socket = pci_get_drvdata(dev);
 | |
| 	int ret;
 | |
| 
 | |
| 	ret = pcmcia_socket_dev_suspend(&dev->dev, state);
 | |
| 
 | |
| 	if (socket) {
 | |
| 		if (socket->type && socket->type->save_state)
 | |
| 			socket->type->save_state(socket);
 | |
| 
 | |
| 		/* FIXME: pci_save_state needs to have a better interface */
 | |
| 		pci_save_state(dev);
 | |
| 		pci_read_config_dword(dev, 16*4, &socket->saved_state[0]);
 | |
| 		pci_read_config_dword(dev, 17*4, &socket->saved_state[1]);
 | |
| 		pci_disable_device(dev);
 | |
| 
 | |
| 		/*
 | |
| 		 * Some laptops (IBM T22) do not like us putting the Cardbus
 | |
| 		 * bridge into D3.  At a guess, some other laptop will
 | |
| 		 * probably require this, so leave it commented out for now.
 | |
| 		 */
 | |
| 		/* pci_set_power_state(dev, 3); */
 | |
| 	}
 | |
| 
 | |
| 	return ret;
 | |
| }
 | |
| 
 | |
| 
 | |
| static int yenta_dev_resume (struct pci_dev *dev)
 | |
| {
 | |
| 	struct yenta_socket *socket = pci_get_drvdata(dev);
 | |
| 
 | |
| 	if (socket) {
 | |
| 		int rc;
 | |
| 
 | |
| 		pci_set_power_state(dev, 0);
 | |
| 		/* FIXME: pci_restore_state needs to have a better interface */
 | |
| 		pci_restore_state(dev);
 | |
| 		pci_write_config_dword(dev, 16*4, socket->saved_state[0]);
 | |
| 		pci_write_config_dword(dev, 17*4, socket->saved_state[1]);
 | |
| 
 | |
| 		rc = pci_enable_device(dev);
 | |
| 		if (rc)
 | |
| 			return rc;
 | |
| 
 | |
| 		pci_set_master(dev);
 | |
| 
 | |
| 		if (socket->type && socket->type->restore_state)
 | |
| 			socket->type->restore_state(socket);
 | |
| 	}
 | |
| 
 | |
| 	return pcmcia_socket_dev_resume(&dev->dev);
 | |
| }
 | |
| #endif
 | |
| 
 | |
| #define CB_ID(vend,dev,type)				\
 | |
| 	{						\
 | |
| 		.vendor		= vend,			\
 | |
| 		.device		= dev,			\
 | |
| 		.subvendor	= PCI_ANY_ID,		\
 | |
| 		.subdevice	= PCI_ANY_ID,		\
 | |
| 		.class		= PCI_CLASS_BRIDGE_CARDBUS << 8, \
 | |
| 		.class_mask	= ~0,			\
 | |
| 		.driver_data	= CARDBUS_TYPE_##type,	\
 | |
| 	}
 | |
| 
 | |
| static struct pci_device_id yenta_table [] = {
 | |
| 	CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1031, TI),
 | |
| 
 | |
| 	/*
 | |
| 	 * TBD: Check if these TI variants can use more
 | |
| 	 * advanced overrides instead.  (I can't get the
 | |
| 	 * data sheets for these devices. --rmk)
 | |
| 	 */
 | |
| #ifdef CONFIG_YENTA_TI
 | |
| 	CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1210, TI),
 | |
| 
 | |
| 	CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1130, TI113X),
 | |
| 	CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1131, TI113X),
 | |
| 
 | |
| 	CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1211, TI12XX),
 | |
| 	CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1220, TI12XX),
 | |
| 	CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1221, TI12XX),
 | |
| 	CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1225, TI12XX),
 | |
| 	CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1251A, TI12XX),
 | |
| 	CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1251B, TI12XX),
 | |
| 	CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1420, TI12XX),
 | |
| 	CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1450, TI12XX),
 | |
| 	CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1451A, TI12XX),
 | |
| 	CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1510, TI12XX),
 | |
| 	CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1520, TI12XX),
 | |
| 	CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1620, TI12XX),
 | |
| 	CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_4410, TI12XX),
 | |
| 	CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_4450, TI12XX),
 | |
| 	CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_4451, TI12XX),
 | |
| 	CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_4510, TI12XX),
 | |
| 	CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_4520, TI12XX),
 | |
| 
 | |
| 	CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1250, TI1250),
 | |
| 	CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1410, TI1250),
 | |
| 
 | |
| 	CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_XX21_XX11, TI12XX),
 | |
| 	CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_X515, TI12XX),
 | |
| 	CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_XX12, TI12XX),
 | |
| 	CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_X420, TI12XX),
 | |
| 	CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_X620, TI12XX),
 | |
| 	CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_7410, TI12XX),
 | |
| 	CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_7510, TI12XX),
 | |
| 	CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_7610, TI12XX),
 | |
| 
 | |
| 	CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_710, TI12XX),
 | |
| 	CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_712, TI12XX),
 | |
| 	CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_720, TI12XX),
 | |
| 	CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_722, TI12XX),
 | |
| 	CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_1211, ENE),
 | |
| 	CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_1225, ENE),
 | |
| 	CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_1410, ENE),
 | |
| 	CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_1420, ENE),
 | |
| #endif /* CONFIG_YENTA_TI */
 | |
| 
 | |
| #ifdef CONFIG_YENTA_RICOH
 | |
| 	CB_ID(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C465, RICOH),
 | |
| 	CB_ID(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C466, RICOH),
 | |
| 	CB_ID(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C475, RICOH),
 | |
| 	CB_ID(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C476, RICOH),
 | |
| 	CB_ID(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C478, RICOH),
 | |
| #endif
 | |
| 
 | |
| #ifdef CONFIG_YENTA_TOSHIBA
 | |
| 	CB_ID(PCI_VENDOR_ID_TOSHIBA, PCI_DEVICE_ID_TOSHIBA_TOPIC95, TOPIC95),
 | |
| 	CB_ID(PCI_VENDOR_ID_TOSHIBA, PCI_DEVICE_ID_TOSHIBA_TOPIC97, TOPIC97),
 | |
| 	CB_ID(PCI_VENDOR_ID_TOSHIBA, PCI_DEVICE_ID_TOSHIBA_TOPIC100, TOPIC97),
 | |
| #endif
 | |
| 
 | |
| #ifdef CONFIG_YENTA_O2
 | |
| 	CB_ID(PCI_VENDOR_ID_O2, PCI_ANY_ID, O2MICRO),
 | |
| #endif
 | |
| 
 | |
| 	/* match any cardbus bridge */
 | |
| 	CB_ID(PCI_ANY_ID, PCI_ANY_ID, DEFAULT),
 | |
| 	{ /* all zeroes */ }
 | |
| };
 | |
| MODULE_DEVICE_TABLE(pci, yenta_table);
 | |
| 
 | |
| 
 | |
| static struct pci_driver yenta_cardbus_driver = {
 | |
| 	.name		= "yenta_cardbus",
 | |
| 	.id_table	= yenta_table,
 | |
| 	.probe		= yenta_probe,
 | |
| 	.remove		= __devexit_p(yenta_close),
 | |
| #ifdef CONFIG_PM
 | |
| 	.suspend	= yenta_dev_suspend,
 | |
| 	.resume		= yenta_dev_resume,
 | |
| #endif
 | |
| };
 | |
| 
 | |
| 
 | |
| static int __init yenta_socket_init(void)
 | |
| {
 | |
| 	return pci_register_driver (¥ta_cardbus_driver);
 | |
| }
 | |
| 
 | |
| 
 | |
| static void __exit yenta_socket_exit (void)
 | |
| {
 | |
| 	pci_unregister_driver (¥ta_cardbus_driver);
 | |
| }
 | |
| 
 | |
| 
 | |
| module_init(yenta_socket_init);
 | |
| module_exit(yenta_socket_exit);
 | |
| 
 | |
| MODULE_LICENSE("GPL");
 | 
