[linux-block.git] / drivers / pnp / interface.c

// SPDX-License-Identifier: GPL-2.0
/*
 * interface.c - contains everything related to the user interface
 *
 * Some code, especially possible resource dumping is based on isapnp_proc.c (c) Jaroslav Kysela <perex@perex.cz>
 * Copyright 2002 Adam Belay <ambx1@neo.rr.com>
 * Copyright (C) 2008 Hewlett-Packard Development Company, L.P.
 *	Bjorn Helgaas <bjorn.helgaas@hp.com>
 */

#include <linux/pnp.h>
#include <linux/string.h>
#include <linux/errno.h>
#include <linux/list.h>
#include <linux/types.h>
#include <linux/stat.h>
#include <linux/ctype.h>
#include <linux/slab.h>
#include <linux/mutex.h>

#include <linux/uaccess.h>

#include "base.h"

struct pnp_info_buffer {
	char *buffer;		/* pointer to begin of buffer */
	char *curr;		/* current position in buffer */
	unsigned long size;	/* current size */
	unsigned long len;	/* total length of buffer */
	int stop;		/* stop flag */
	int error;		/* error code */
};

typedef struct pnp_info_buffer pnp_info_buffer_t;

__printf(2, 3)
static int pnp_printf(pnp_info_buffer_t * buffer, char *fmt, ...)
{
	va_list args;
	int res;

	if (buffer->stop || buffer->error)
		return 0;
	va_start(args, fmt);
	res = vsnprintf(buffer->curr, buffer->len - buffer->size, fmt, args);
	va_end(args);
	if (buffer->size + res >= buffer->len) {
		buffer->stop = 1;
		return 0;
	}
	buffer->curr += res;
	buffer->size += res;
	return res;
}

static void pnp_print_port(pnp_info_buffer_t * buffer, char *space,
			   struct pnp_port *port)
{
	pnp_printf(buffer, "%sport %#llx-%#llx, align %#llx, size %#llx, "
		   "%i-bit address decoding\n", space,
		   (unsigned long long) port->min,
		   (unsigned long long) port->max,
		   port->align ? ((unsigned long long) port->align - 1) : 0,
		   (unsigned long long) port->size,
		   port->flags & IORESOURCE_IO_16BIT_ADDR ? 16 : 10);
}

static void pnp_print_irq(pnp_info_buffer_t * buffer, char *space,
			  struct pnp_irq *irq)
{
	int first = 1, i;

	pnp_printf(buffer, "%sirq ", space);
	for (i = 0; i < PNP_IRQ_NR; i++)
		if (test_bit(i, irq->map.bits)) {
			if (!first) {
				pnp_printf(buffer, ",");
			} else {
				first = 0;
			}
			if (i == 2 || i == 9)
				pnp_printf(buffer, "2/9");
			else
				pnp_printf(buffer, "%i", i);
		}
	if (bitmap_empty(irq->map.bits, PNP_IRQ_NR))
		pnp_printf(buffer, "<none>");
	if (irq->flags & IORESOURCE_IRQ_HIGHEDGE)
		pnp_printf(buffer, " High-Edge");
	if (irq->flags & IORESOURCE_IRQ_LOWEDGE)
		pnp_printf(buffer, " Low-Edge");
	if (irq->flags & IORESOURCE_IRQ_HIGHLEVEL)
		pnp_printf(buffer, " High-Level");
	if (irq->flags & IORESOURCE_IRQ_LOWLEVEL)
		pnp_printf(buffer, " Low-Level");
	if (irq->flags & IORESOURCE_IRQ_OPTIONAL)
		pnp_printf(buffer, " (optional)");
	pnp_printf(buffer, "\n");
}

static void pnp_print_dma(pnp_info_buffer_t * buffer, char *space,
			  struct pnp_dma *dma)
{
	int first = 1, i;
	char *s;

	pnp_printf(buffer, "%sdma ", space);
	for (i = 0; i < 8; i++)
		if (dma->map & (1 << i)) {
			if (!first) {
				pnp_printf(buffer, ",");
			} else {
				first = 0;
			}
			pnp_printf(buffer, "%i", i);
		}
	if (!dma->map)
		pnp_printf(buffer, "<none>");
	switch (dma->flags & IORESOURCE_DMA_TYPE_MASK) {
	case IORESOURCE_DMA_8BIT:
		s = "8-bit";
		break;
	case IORESOURCE_DMA_8AND16BIT:
		s = "8-bit&16-bit";
		break;
	default:
		s = "16-bit";
	}
	pnp_printf(buffer, " %s", s);
	if (dma->flags & IORESOURCE_DMA_MASTER)
		pnp_printf(buffer, " master");
	if (dma->flags & IORESOURCE_DMA_BYTE)
		pnp_printf(buffer, " byte-count");
	if (dma->flags & IORESOURCE_DMA_WORD)
		pnp_printf(buffer, " word-count");
	switch (dma->flags & IORESOURCE_DMA_SPEED_MASK) {
	case IORESOURCE_DMA_TYPEA:
		s = "type-A";
		break;
	case IORESOURCE_DMA_TYPEB:
		s = "type-B";
		break;
	case IORESOURCE_DMA_TYPEF:
		s = "type-F";
		break;
	default:
		s = "compatible";
		break;
	}
	pnp_printf(buffer, " %s\n", s);
}

static void pnp_print_mem(pnp_info_buffer_t * buffer, char *space,
			  struct pnp_mem *mem)
{
	char *s;

	pnp_printf(buffer, "%sMemory %#llx-%#llx, align %#llx, size %#llx",
		   space, (unsigned long long) mem->min,
		   (unsigned long long) mem->max,
		   (unsigned long long) mem->align,
		   (unsigned long long) mem->size);
	if (mem->flags & IORESOURCE_MEM_WRITEABLE)
		pnp_printf(buffer, ", writeable");
	if (mem->flags & IORESOURCE_MEM_CACHEABLE)
		pnp_printf(buffer, ", cacheable");
	if (mem->flags & IORESOURCE_MEM_RANGELENGTH)
		pnp_printf(buffer, ", range-length");
	if (mem->flags & IORESOURCE_MEM_SHADOWABLE)
		pnp_printf(buffer, ", shadowable");
	if (mem->flags & IORESOURCE_MEM_EXPANSIONROM)
		pnp_printf(buffer, ", expansion ROM");
	switch (mem->flags & IORESOURCE_MEM_TYPE_MASK) {
	case IORESOURCE_MEM_8BIT:
		s = "8-bit";
		break;
	case IORESOURCE_MEM_8AND16BIT:
		s = "8-bit&16-bit";
		break;
	case IORESOURCE_MEM_32BIT:
		s = "32-bit";
		break;
	default:
		s = "16-bit";
	}
	pnp_printf(buffer, ", %s\n", s);
}

static void pnp_print_option(pnp_info_buffer_t * buffer, char *space,
			     struct pnp_option *option)
{
	switch (option->type) {
	case IORESOURCE_IO:
		pnp_print_port(buffer, space, &option->u.port);
		break;
	case IORESOURCE_MEM:
		pnp_print_mem(buffer, space, &option->u.mem);
		break;
	case IORESOURCE_IRQ:
		pnp_print_irq(buffer, space, &option->u.irq);
		break;
	case IORESOURCE_DMA:
		pnp_print_dma(buffer, space, &option->u.dma);
		break;
	}
}

static ssize_t options_show(struct device *dmdev, struct device_attribute *attr,
			    char *buf)
{
	struct pnp_dev *dev = to_pnp_dev(dmdev);
	pnp_info_buffer_t *buffer;
	struct pnp_option *option;
	int ret, dep = 0, set = 0;
	char *indent;

	buffer = kzalloc(sizeof(*buffer), GFP_KERNEL);
	if (!buffer)
		return -ENOMEM;

	buffer->len = PAGE_SIZE;
	buffer->buffer = buf;
	buffer->curr = buffer->buffer;

	list_for_each_entry(option, &dev->options, list) {
		if (pnp_option_is_dependent(option)) {
			indent = "  ";
			if (!dep || pnp_option_set(option) != set) {
				set = pnp_option_set(option);
				dep = 1;
				pnp_printf(buffer, "Dependent: %02i - "
					   "Priority %s\n", set,
					   pnp_option_priority_name(option));
			}
		} else {
			dep = 0;
			indent = "";
		}
		pnp_print_option(buffer, indent, option);
	}

	ret = (buffer->curr - buf);
	kfree(buffer);
	return ret;
}
static DEVICE_ATTR_RO(options);

static ssize_t resources_show(struct device *dmdev,
			      struct device_attribute *attr, char *buf)
{
	struct pnp_dev *dev = to_pnp_dev(dmdev);
	pnp_info_buffer_t *buffer;
	struct pnp_resource *pnp_res;
	struct resource *res;
	int ret;

	if (!dev)
		return -EINVAL;

	buffer = kzalloc(sizeof(*buffer), GFP_KERNEL);
	if (!buffer)
		return -ENOMEM;

	buffer->len = PAGE_SIZE;
	buffer->buffer = buf;
	buffer->curr = buffer->buffer;

	pnp_printf(buffer, "state = %s\n", dev->active ? "active" : "disabled");

	list_for_each_entry(pnp_res, &dev->resources, list) {
		res = &pnp_res->res;

		pnp_printf(buffer, pnp_resource_type_name(res));

		if (res->flags & IORESOURCE_DISABLED) {
			pnp_printf(buffer, " disabled\n");
			continue;
		}

		switch (pnp_resource_type(res)) {
		case IORESOURCE_IO:
		case IORESOURCE_MEM:
		case IORESOURCE_BUS:
			pnp_printf(buffer, " %#llx-%#llx%s\n",
				   (unsigned long long) res->start,
				   (unsigned long long) res->end,
				   res->flags & IORESOURCE_WINDOW ?
					" window" : "");
			break;
		case IORESOURCE_IRQ:
		case IORESOURCE_DMA:
			pnp_printf(buffer, " %lld\n",
				   (unsigned long long) res->start);
			break;
		}
	}

	ret = (buffer->curr - buf);
	kfree(buffer);
	return ret;
}

static char *pnp_get_resource_value(char *buf,
				    unsigned long type,
				    resource_size_t *start,
				    resource_size_t *end,
				    unsigned long *flags)
{
	if (start)
		*start = 0;
	if (end)
		*end = 0;
	if (flags)
		*flags = 0;

	/* TBD: allow for disabled resources */

	buf = skip_spaces(buf);
	if (start) {
		*start = simple_strtoull(buf, &buf, 0);
		if (end) {
			buf = skip_spaces(buf);
			if (*buf == '-') {
				buf = skip_spaces(buf + 1);
				*end = simple_strtoull(buf, &buf, 0);
			} else
				*end = *start;
		}
	}

	/* TBD: allow for additional flags, e.g., IORESOURCE_WINDOW */

	return buf;
}

static ssize_t resources_store(struct device *dmdev,
			       struct device_attribute *attr, const char *ubuf,
			       size_t count)
{
	struct pnp_dev *dev = to_pnp_dev(dmdev);
	char *buf = (void *)ubuf;
	int retval = 0;

	if (dev->status & PNP_ATTACHED) {
		retval = -EBUSY;
		dev_info(&dev->dev, "in use; can't configure\n");
		goto done;
	}

	buf = skip_spaces(buf);
	if (!strncasecmp(buf, "disable", 7)) {
		retval = pnp_disable_dev(dev);
		goto done;
	}
	if (!strncasecmp(buf, "activate", 8)) {
		retval = pnp_activate_dev(dev);
		goto done;
	}
	if (!strncasecmp(buf, "fill", 4)) {
		if (dev->active)
			goto done;
		retval = pnp_auto_config_dev(dev);
		goto done;
	}
	if (!strncasecmp(buf, "auto", 4)) {
		if (dev->active)
			goto done;
		pnp_init_resources(dev);
		retval = pnp_auto_config_dev(dev);
		goto done;
	}
	if (!strncasecmp(buf, "clear", 5)) {
		if (dev->active)
			goto done;
		pnp_init_resources(dev);
		goto done;
	}
	if (!strncasecmp(buf, "get", 3)) {
		mutex_lock(&pnp_res_mutex);
		if (pnp_can_read(dev))
			dev->protocol->get(dev);
		mutex_unlock(&pnp_res_mutex);
		goto done;
	}
	if (!strncasecmp(buf, "set", 3)) {
		resource_size_t start;
		resource_size_t end;
		unsigned long flags;

		if (dev->active)
			goto done;
		buf += 3;
		pnp_init_resources(dev);
		mutex_lock(&pnp_res_mutex);
		while (1) {
			buf = skip_spaces(buf);
			if (!strncasecmp(buf, "io", 2)) {
				buf = pnp_get_resource_value(buf + 2,
							     IORESOURCE_IO,
							     &start, &end,
							     &flags);
				pnp_add_io_resource(dev, start, end, flags);
			} else if (!strncasecmp(buf, "mem", 3)) {
				buf = pnp_get_resource_value(buf + 3,
							     IORESOURCE_MEM,
							     &start, &end,
							     &flags);
				pnp_add_mem_resource(dev, start, end, flags);
			} else if (!strncasecmp(buf, "irq", 3)) {
				buf = pnp_get_resource_value(buf + 3,
							     IORESOURCE_IRQ,
							     &start, NULL,
							     &flags);
				pnp_add_irq_resource(dev, start, flags);
			} else if (!strncasecmp(buf, "dma", 3)) {
				buf = pnp_get_resource_value(buf + 3,
							     IORESOURCE_DMA,
							     &start, NULL,
							     &flags);
				pnp_add_dma_resource(dev, start, flags);
			} else if (!strncasecmp(buf, "bus", 3)) {
				buf = pnp_get_resource_value(buf + 3,
							     IORESOURCE_BUS,
							     &start, &end,
							     NULL);
				pnp_add_bus_resource(dev, start, end);
			} else
				break;
		}
		mutex_unlock(&pnp_res_mutex);
		goto done;
	}

done:
	if (retval < 0)
		return retval;
	return count;
}
static DEVICE_ATTR_RW(resources);

static ssize_t id_show(struct device *dmdev, struct device_attribute *attr,
		       char *buf)
{
	char *str = buf;
	struct pnp_dev *dev = to_pnp_dev(dmdev);
	struct pnp_id *pos = dev->id;

	while (pos) {
		str += sprintf(str, "%s\n", pos->id);
		pos = pos->next;
	}
	return (str - buf);
}
static DEVICE_ATTR_RO(id);

static struct attribute *pnp_dev_attrs[] = {
	&dev_attr_resources.attr,
	&dev_attr_options.attr,
	&dev_attr_id.attr,
	NULL,
};

static const struct attribute_group pnp_dev_group = {
	.attrs = pnp_dev_attrs,
};

const struct attribute_group *pnp_dev_groups[] = {
	&pnp_dev_group,
	NULL,
};
Commit	Line	Data
b2441318	1	// SPDX-License-Identifier: GPL-2.0
1da177e4 LT	2	/*
	3	* interface.c - contains everything related to the user interface
	4	*
c1017a4c	5	* Some code, especially possible resource dumping is based on isapnp_proc.c (c) Jaroslav Kysela <perex@perex.cz>
1da177e4	6	* Copyright 2002 Adam Belay <ambx1@neo.rr.com>
1f32ca31 BH	7	* Copyright (C) 2008 Hewlett-Packard Development Company, L.P.
1f32ca31 BH	8	* Bjorn Helgaas <bjorn.helgaas@hp.com>
1da177e4 LT	9	*/
	10
	11	#include <linux/pnp.h>
	12	#include <linux/string.h>
	13	#include <linux/errno.h>
	14	#include <linux/list.h>
	15	#include <linux/types.h>
	16	#include <linux/stat.h>
	17	#include <linux/ctype.h>
	18	#include <linux/slab.h>
b3bd86e2 DW	19	#include <linux/mutex.h>
b3bd86e2 DW	20
7c0f6ba6	21	#include <linux/uaccess.h>
1da177e4 LT	22
	23	#include "base.h"
	24
	25	struct pnp_info_buffer {
	26	char buffer; / pointer to begin of buffer */
	27	char curr; / current position in buffer */
	28	unsigned long size; /* current size */
	29	unsigned long len; /* total length of buffer */
	30	int stop; /* stop flag */
	31	int error; /* error code */
	32	};
	33
	34	typedef struct pnp_info_buffer pnp_info_buffer_t;
	35
b1f4213c	36	__printf(2, 3)
9dd78466	37	static int pnp_printf(pnp_info_buffer_t * buffer, char *fmt, ...)
1da177e4 LT	38	{
	39	va_list args;
	40	int res;
	41
	42	if (buffer->stop \|\| buffer->error)
	43	return 0;
	44	va_start(args, fmt);
	45	res = vsnprintf(buffer->curr, buffer->len - buffer->size, fmt, args);
	46	va_end(args);
	47	if (buffer->size + res >= buffer->len) {
	48	buffer->stop = 1;
	49	return 0;
	50	}
	51	buffer->curr += res;
	52	buffer->size += res;
	53	return res;
	54	}
	55
9dd78466 BH	56	static void pnp_print_port(pnp_info_buffer_t * buffer, char *space,
9dd78466 BH	57	struct pnp_port *port)
1da177e4	58	{
169aaffe BH	59	pnp_printf(buffer, "%sport %#llx-%#llx, align %#llx, size %#llx, "
	60	"%i-bit address decoding\n", space,
	61	(unsigned long long) port->min,
	62	(unsigned long long) port->max,
	63	port->align ? ((unsigned long long) port->align - 1) : 0,
	64	(unsigned long long) port->size,
08c9f262	65	port->flags & IORESOURCE_IO_16BIT_ADDR ? 16 : 10);
1da177e4 LT	66	}
1da177e4 LT	67
9dd78466 BH	68	static void pnp_print_irq(pnp_info_buffer_t * buffer, char *space,
9dd78466 BH	69	struct pnp_irq *irq)
1da177e4 LT	70	{
	71	int first = 1, i;
	72
	73	pnp_printf(buffer, "%sirq ", space);
	74	for (i = 0; i < PNP_IRQ_NR; i++)
7aefff51	75	if (test_bit(i, irq->map.bits)) {
1da177e4 LT	76	if (!first) {
	77	pnp_printf(buffer, ",");
	78	} else {
	79	first = 0;
	80	}
	81	if (i == 2 \|\| i == 9)
	82	pnp_printf(buffer, "2/9");
	83	else
	84	pnp_printf(buffer, "%i", i);
	85	}
7aefff51	86	if (bitmap_empty(irq->map.bits, PNP_IRQ_NR))
1da177e4 LT	87	pnp_printf(buffer, "<none>");
	88	if (irq->flags & IORESOURCE_IRQ_HIGHEDGE)
	89	pnp_printf(buffer, " High-Edge");
	90	if (irq->flags & IORESOURCE_IRQ_LOWEDGE)
	91	pnp_printf(buffer, " Low-Edge");
	92	if (irq->flags & IORESOURCE_IRQ_HIGHLEVEL)
	93	pnp_printf(buffer, " High-Level");
	94	if (irq->flags & IORESOURCE_IRQ_LOWLEVEL)
	95	pnp_printf(buffer, " Low-Level");
d5ebde6e BH	96	if (irq->flags & IORESOURCE_IRQ_OPTIONAL)
d5ebde6e BH	97	pnp_printf(buffer, " (optional)");
1da177e4 LT	98	pnp_printf(buffer, "\n");
	99	}
	100
9dd78466 BH	101	static void pnp_print_dma(pnp_info_buffer_t * buffer, char *space,
9dd78466 BH	102	struct pnp_dma *dma)
1da177e4 LT	103	{
	104	int first = 1, i;
	105	char *s;
	106
	107	pnp_printf(buffer, "%sdma ", space);
	108	for (i = 0; i < 8; i++)
9dd78466	109	if (dma->map & (1 << i)) {
1da177e4 LT	110	if (!first) {
	111	pnp_printf(buffer, ",");
	112	} else {
	113	first = 0;
	114	}
	115	pnp_printf(buffer, "%i", i);
	116	}
	117	if (!dma->map)
	118	pnp_printf(buffer, "<none>");
	119	switch (dma->flags & IORESOURCE_DMA_TYPE_MASK) {
	120	case IORESOURCE_DMA_8BIT:
	121	s = "8-bit";
	122	break;
	123	case IORESOURCE_DMA_8AND16BIT:
	124	s = "8-bit&16-bit";
	125	break;
	126	default:
	127	s = "16-bit";
	128	}
	129	pnp_printf(buffer, " %s", s);
	130	if (dma->flags & IORESOURCE_DMA_MASTER)
	131	pnp_printf(buffer, " master");
	132	if (dma->flags & IORESOURCE_DMA_BYTE)
	133	pnp_printf(buffer, " byte-count");
	134	if (dma->flags & IORESOURCE_DMA_WORD)
	135	pnp_printf(buffer, " word-count");
	136	switch (dma->flags & IORESOURCE_DMA_SPEED_MASK) {
	137	case IORESOURCE_DMA_TYPEA:
	138	s = "type-A";
	139	break;
	140	case IORESOURCE_DMA_TYPEB:
	141	s = "type-B";
	142	break;
	143	case IORESOURCE_DMA_TYPEF:
	144	s = "type-F";
	145	break;
	146	default:
	147	s = "compatible";
	148	break;
	149	}
	150	pnp_printf(buffer, " %s\n", s);
	151	}
	152
9dd78466 BH	153	static void pnp_print_mem(pnp_info_buffer_t * buffer, char *space,
9dd78466 BH	154	struct pnp_mem *mem)
1da177e4 LT	155	{
	156	char *s;
	157
169aaffe BH	158	pnp_printf(buffer, "%sMemory %#llx-%#llx, align %#llx, size %#llx",
	159	space, (unsigned long long) mem->min,
	160	(unsigned long long) mem->max,
	161	(unsigned long long) mem->align,
	162	(unsigned long long) mem->size);
1da177e4 LT	163	if (mem->flags & IORESOURCE_MEM_WRITEABLE)
	164	pnp_printf(buffer, ", writeable");
	165	if (mem->flags & IORESOURCE_MEM_CACHEABLE)
	166	pnp_printf(buffer, ", cacheable");
	167	if (mem->flags & IORESOURCE_MEM_RANGELENGTH)
	168	pnp_printf(buffer, ", range-length");
	169	if (mem->flags & IORESOURCE_MEM_SHADOWABLE)
	170	pnp_printf(buffer, ", shadowable");
	171	if (mem->flags & IORESOURCE_MEM_EXPANSIONROM)
	172	pnp_printf(buffer, ", expansion ROM");
	173	switch (mem->flags & IORESOURCE_MEM_TYPE_MASK) {
	174	case IORESOURCE_MEM_8BIT:
	175	s = "8-bit";
	176	break;
	177	case IORESOURCE_MEM_8AND16BIT:
	178	s = "8-bit&16-bit";
	179	break;
	180	case IORESOURCE_MEM_32BIT:
	181	s = "32-bit";
	182	break;
	183	default:
	184	s = "16-bit";
	185	}
	186	pnp_printf(buffer, ", %s\n", s);
	187	}
	188
9dd78466	189	static void pnp_print_option(pnp_info_buffer_t * buffer, char *space,
1f32ca31	190	struct pnp_option *option)
1da177e4	191	{
1f32ca31 BH	192	switch (option->type) {
	193	case IORESOURCE_IO:
	194	pnp_print_port(buffer, space, &option->u.port);
	195	break;
	196	case IORESOURCE_MEM:
	197	pnp_print_mem(buffer, space, &option->u.mem);
	198	break;
	199	case IORESOURCE_IRQ:
	200	pnp_print_irq(buffer, space, &option->u.irq);
	201	break;
	202	case IORESOURCE_DMA:
	203	pnp_print_dma(buffer, space, &option->u.dma);
	204	break;
1da177e4	205	}
1da177e4 LT	206	}
1da177e4 LT	207
2df43901 GKH	208	static ssize_t options_show(struct device dmdev, struct device_attribute attr,
2df43901 GKH	209	char *buf)
1da177e4 LT	210	{
1da177e4 LT	211	struct pnp_dev *dev = to_pnp_dev(dmdev);
b72ee1f1	212	pnp_info_buffer_t *buffer;
1f32ca31 BH	213	struct pnp_option *option;
	214	int ret, dep = 0, set = 0;
	215	char *indent;
1da177e4	216
b15fc7c2	217	buffer = kzalloc(sizeof(*buffer), GFP_KERNEL);
1da177e4 LT	218	if (!buffer)
	219	return -ENOMEM;
	220
	221	buffer->len = PAGE_SIZE;
	222	buffer->buffer = buf;
	223	buffer->curr = buffer->buffer;
1da177e4	224
1f32ca31 BH	225	list_for_each_entry(option, &dev->options, list) {
	226	if (pnp_option_is_dependent(option)) {
	227	indent = " ";
	228	if (!dep \|\| pnp_option_set(option) != set) {
	229	set = pnp_option_set(option);
	230	dep = 1;
	231	pnp_printf(buffer, "Dependent: %02i - "
	232	"Priority %s\n", set,
	233	pnp_option_priority_name(option));
	234	}
	235	} else {
	236	dep = 0;
	237	indent = "";
	238	}
	239	pnp_print_option(buffer, indent, option);
1da177e4	240	}
1f32ca31	241
1da177e4 LT	242	ret = (buffer->curr - buf);
	243	kfree(buffer);
	244	return ret;
	245	}
2df43901	246	static DEVICE_ATTR_RO(options);
1da177e4	247
2df43901 GKH	248	static ssize_t resources_show(struct device *dmdev,
2df43901 GKH	249	struct device_attribute attr, char buf)
1da177e4 LT	250	{
1da177e4 LT	251	struct pnp_dev *dev = to_pnp_dev(dmdev);
b72ee1f1	252	pnp_info_buffer_t *buffer;
f61ed7e3	253	struct pnp_resource *pnp_res;
95ab3669	254	struct resource *res;
f61ed7e3	255	int ret;
1da177e4 LT	256
	257	if (!dev)
	258	return -EINVAL;
	259
b15fc7c2	260	buffer = kzalloc(sizeof(*buffer), GFP_KERNEL);
1da177e4 LT	261	if (!buffer)
1da177e4 LT	262	return -ENOMEM;
b72ee1f1	263
1da177e4 LT	264	buffer->len = PAGE_SIZE;
	265	buffer->buffer = buf;
	266	buffer->curr = buffer->buffer;
	267
f61ed7e3	268	pnp_printf(buffer, "state = %s\n", dev->active ? "active" : "disabled");
1da177e4	269
f61ed7e3 BH	270	list_for_each_entry(pnp_res, &dev->resources, list) {
	271	res = &pnp_res->res;
	272
	273	pnp_printf(buffer, pnp_resource_type_name(res));
	274
	275	if (res->flags & IORESOURCE_DISABLED) {
aee3ad81	276	pnp_printf(buffer, " disabled\n");
f61ed7e3 BH	277	continue;
	278	}
	279
	280	switch (pnp_resource_type(res)) {
	281	case IORESOURCE_IO:
	282	case IORESOURCE_MEM:
7e0e9c04	283	case IORESOURCE_BUS:
fa35b492	284	pnp_printf(buffer, " %#llx-%#llx%s\n",
aee3ad81	285	(unsigned long long) res->start,
fa35b492 BH	286	(unsigned long long) res->end,
	287	res->flags & IORESOURCE_WINDOW ?
	288	" window" : "");
f61ed7e3 BH	289	break;
	290	case IORESOURCE_IRQ:
	291	case IORESOURCE_DMA:
aee3ad81 BH	292	pnp_printf(buffer, " %lld\n",
aee3ad81 BH	293	(unsigned long long) res->start);
f61ed7e3 BH	294	break;
f61ed7e3 BH	295	}
1da177e4	296	}
f61ed7e3	297
1da177e4 LT	298	ret = (buffer->curr - buf);
	299	kfree(buffer);
	300	return ret;
	301	}
	302
c9377667 WS	303	static char pnp_get_resource_value(char buf,
	304	unsigned long type,
	305	resource_size_t *start,
	306	resource_size_t *end,
	307	unsigned long *flags)
	308	{
	309	if (start)
	310	*start = 0;
	311	if (end)
	312	*end = 0;
	313	if (flags)
	314	*flags = 0;
	315
	316	/* TBD: allow for disabled resources */
	317
	318	buf = skip_spaces(buf);
	319	if (start) {
	320	*start = simple_strtoull(buf, &buf, 0);
	321	if (end) {
	322	buf = skip_spaces(buf);
	323	if (*buf == '-') {
	324	buf = skip_spaces(buf + 1);
	325	*end = simple_strtoull(buf, &buf, 0);
	326	} else
	327	end = start;
	328	}
	329	}
	330
	331	/* TBD: allow for additional flags, e.g., IORESOURCE_WINDOW */
	332
	333	return buf;
	334	}
	335
2df43901 GKH	336	static ssize_t resources_store(struct device *dmdev,
	337	struct device_attribute attr, const char ubuf,
	338	size_t count)
1da177e4 LT	339	{
1da177e4 LT	340	struct pnp_dev *dev = to_pnp_dev(dmdev);
9dd78466 BH	341	char buf = (void )ubuf;
9dd78466 BH	342	int retval = 0;
1da177e4 LT	343
	344	if (dev->status & PNP_ATTACHED) {
	345	retval = -EBUSY;
a05d0781	346	dev_info(&dev->dev, "in use; can't configure\n");
1da177e4 LT	347	goto done;
	348	}
	349
e7d2860b	350	buf = skip_spaces(buf);
7fb1cab4	351	if (!strncasecmp(buf, "disable", 7)) {
1da177e4 LT	352	retval = pnp_disable_dev(dev);
	353	goto done;
	354	}
7fb1cab4	355	if (!strncasecmp(buf, "activate", 8)) {
1da177e4 LT	356	retval = pnp_activate_dev(dev);
	357	goto done;
	358	}
7fb1cab4	359	if (!strncasecmp(buf, "fill", 4)) {
1da177e4 LT	360	if (dev->active)
	361	goto done;
	362	retval = pnp_auto_config_dev(dev);
	363	goto done;
	364	}
7fb1cab4	365	if (!strncasecmp(buf, "auto", 4)) {
1da177e4 LT	366	if (dev->active)
1da177e4 LT	367	goto done;
f4490002	368	pnp_init_resources(dev);
1da177e4 LT	369	retval = pnp_auto_config_dev(dev);
	370	goto done;
	371	}
7fb1cab4	372	if (!strncasecmp(buf, "clear", 5)) {
1da177e4 LT	373	if (dev->active)
1da177e4 LT	374	goto done;
f4490002	375	pnp_init_resources(dev);
1da177e4 LT	376	goto done;
1da177e4 LT	377	}
7fb1cab4	378	if (!strncasecmp(buf, "get", 3)) {
b3bd86e2	379	mutex_lock(&pnp_res_mutex);
1da177e4	380	if (pnp_can_read(dev))
59284cb4	381	dev->protocol->get(dev);
b3bd86e2	382	mutex_unlock(&pnp_res_mutex);
1da177e4 LT	383	goto done;
1da177e4 LT	384	}
7fb1cab4	385	if (!strncasecmp(buf, "set", 3)) {
c9377667 WS	386	resource_size_t start;
	387	resource_size_t end;
	388	unsigned long flags;
	389
1da177e4 LT	390	if (dev->active)
	391	goto done;
	392	buf += 3;
f4490002	393	pnp_init_resources(dev);
b3bd86e2	394	mutex_lock(&pnp_res_mutex);
1da177e4	395	while (1) {
e7d2860b	396	buf = skip_spaces(buf);
7fb1cab4	397	if (!strncasecmp(buf, "io", 2)) {
c9377667 WS	398	buf = pnp_get_resource_value(buf + 2,
	399	IORESOURCE_IO,
	400	&start, &end,
	401	&flags);
	402	pnp_add_io_resource(dev, start, end, flags);
7fb1cab4	403	} else if (!strncasecmp(buf, "mem", 3)) {
c9377667 WS	404	buf = pnp_get_resource_value(buf + 3,
	405	IORESOURCE_MEM,
	406	&start, &end,
	407	&flags);
	408	pnp_add_mem_resource(dev, start, end, flags);
7fb1cab4	409	} else if (!strncasecmp(buf, "irq", 3)) {
c9377667 WS	410	buf = pnp_get_resource_value(buf + 3,
	411	IORESOURCE_IRQ,
	412	&start, NULL,
	413	&flags);
	414	pnp_add_irq_resource(dev, start, flags);
7fb1cab4	415	} else if (!strncasecmp(buf, "dma", 3)) {
c9377667 WS	416	buf = pnp_get_resource_value(buf + 3,
	417	IORESOURCE_DMA,
	418	&start, NULL,
	419	&flags);
	420	pnp_add_dma_resource(dev, start, flags);
7fb1cab4	421	} else if (!strncasecmp(buf, "bus", 3)) {
c9377667 WS	422	buf = pnp_get_resource_value(buf + 3,
	423	IORESOURCE_BUS,
	424	&start, &end,
	425	NULL);
	426	pnp_add_bus_resource(dev, start, end);
	427	} else
	428	break;
1da177e4	429	}
b3bd86e2	430	mutex_unlock(&pnp_res_mutex);
1da177e4 LT	431	goto done;
1da177e4 LT	432	}
1e0aa9ad BH	433
1e0aa9ad BH	434	done:
1da177e4 LT	435	if (retval < 0)
	436	return retval;
	437	return count;
	438	}
2df43901	439	static DEVICE_ATTR_RW(resources);
1da177e4	440
2df43901 GKH	441	static ssize_t id_show(struct device dmdev, struct device_attribute attr,
2df43901 GKH	442	char *buf)
1da177e4 LT	443	{
	444	char *str = buf;
	445	struct pnp_dev *dev = to_pnp_dev(dmdev);
9dd78466	446	struct pnp_id *pos = dev->id;
1da177e4 LT	447
1da177e4 LT	448	while (pos) {
9dd78466	449	str += sprintf(str, "%s\n", pos->id);
1da177e4 LT	450	pos = pos->next;
	451	}
	452	return (str - buf);
	453	}
2df43901	454	static DEVICE_ATTR_RO(id);
1da177e4	455
2df43901 GKH	456	static struct attribute *pnp_dev_attrs[] = {
	457	&dev_attr_resources.attr,
	458	&dev_attr_options.attr,
	459	&dev_attr_id.attr,
	460	NULL,
	461	};
	462
	463	static const struct attribute_group pnp_dev_group = {
	464	.attrs = pnp_dev_attrs,
	465	};
	466
	467	const struct attribute_group *pnp_dev_groups[] = {
	468	&pnp_dev_group,
	469	NULL,
8a89efd1	470	};