[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;

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