mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-21 16:29:59 +00:00
509 lines
12 KiB
C
509 lines
12 KiB
C
/*
|
|
* 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>
|
|
*/
|
|
|
|
#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 <asm/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 0x%x-0x%x, align 0x%x, size 0x%x, %i-bit address decoding\n",
|
|
space, port->min, port->max,
|
|
port->align ? (port->align - 1) : 0, port->size,
|
|
port->flags & PNP_PORT_FLAG_16BITADDR ? 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)) {
|
|
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, 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");
|
|
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 0x%x-0x%x, align 0x%x, size 0x%x",
|
|
space, mem->min, mem->max, mem->align, 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, int dep)
|
|
{
|
|
char *s;
|
|
struct pnp_port *port;
|
|
struct pnp_irq *irq;
|
|
struct pnp_dma *dma;
|
|
struct pnp_mem *mem;
|
|
|
|
if (dep) {
|
|
switch (option->priority) {
|
|
case PNP_RES_PRIORITY_PREFERRED:
|
|
s = "preferred";
|
|
break;
|
|
case PNP_RES_PRIORITY_ACCEPTABLE:
|
|
s = "acceptable";
|
|
break;
|
|
case PNP_RES_PRIORITY_FUNCTIONAL:
|
|
s = "functional";
|
|
break;
|
|
default:
|
|
s = "invalid";
|
|
}
|
|
pnp_printf(buffer, "Dependent: %02i - Priority %s\n", dep, s);
|
|
}
|
|
|
|
for (port = option->port; port; port = port->next)
|
|
pnp_print_port(buffer, space, port);
|
|
for (irq = option->irq; irq; irq = irq->next)
|
|
pnp_print_irq(buffer, space, irq);
|
|
for (dma = option->dma; dma; dma = dma->next)
|
|
pnp_print_dma(buffer, space, dma);
|
|
for (mem = option->mem; mem; mem = mem->next)
|
|
pnp_print_mem(buffer, space, mem);
|
|
}
|
|
|
|
static ssize_t pnp_show_options(struct device *dmdev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
struct pnp_dev *dev = to_pnp_dev(dmdev);
|
|
struct pnp_option *independent = dev->independent;
|
|
struct pnp_option *dependent = dev->dependent;
|
|
int ret, dep = 1;
|
|
|
|
pnp_info_buffer_t *buffer = (pnp_info_buffer_t *)
|
|
pnp_alloc(sizeof(pnp_info_buffer_t));
|
|
if (!buffer)
|
|
return -ENOMEM;
|
|
|
|
buffer->len = PAGE_SIZE;
|
|
buffer->buffer = buf;
|
|
buffer->curr = buffer->buffer;
|
|
if (independent)
|
|
pnp_print_option(buffer, "", independent, 0);
|
|
|
|
while (dependent) {
|
|
pnp_print_option(buffer, " ", dependent, dep);
|
|
dependent = dependent->next;
|
|
dep++;
|
|
}
|
|
ret = (buffer->curr - buf);
|
|
kfree(buffer);
|
|
return ret;
|
|
}
|
|
|
|
static DEVICE_ATTR(options, S_IRUGO, pnp_show_options, NULL);
|
|
|
|
static ssize_t pnp_show_current_resources(struct device *dmdev,
|
|
struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
struct pnp_dev *dev = to_pnp_dev(dmdev);
|
|
int i, ret;
|
|
pnp_info_buffer_t *buffer;
|
|
|
|
if (!dev)
|
|
return -EINVAL;
|
|
|
|
buffer = (pnp_info_buffer_t *) 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 = ");
|
|
if (dev->active)
|
|
pnp_printf(buffer, "active\n");
|
|
else
|
|
pnp_printf(buffer, "disabled\n");
|
|
|
|
for (i = 0; i < PNP_MAX_PORT; i++) {
|
|
if (pnp_port_valid(dev, i)) {
|
|
pnp_printf(buffer, "io");
|
|
if (pnp_port_flags(dev, i) & IORESOURCE_DISABLED)
|
|
pnp_printf(buffer, " disabled\n");
|
|
else
|
|
pnp_printf(buffer, " 0x%llx-0x%llx\n",
|
|
(unsigned long long)
|
|
pnp_port_start(dev, i),
|
|
(unsigned long long)pnp_port_end(dev,
|
|
i));
|
|
}
|
|
}
|
|
for (i = 0; i < PNP_MAX_MEM; i++) {
|
|
if (pnp_mem_valid(dev, i)) {
|
|
pnp_printf(buffer, "mem");
|
|
if (pnp_mem_flags(dev, i) & IORESOURCE_DISABLED)
|
|
pnp_printf(buffer, " disabled\n");
|
|
else
|
|
pnp_printf(buffer, " 0x%llx-0x%llx\n",
|
|
(unsigned long long)
|
|
pnp_mem_start(dev, i),
|
|
(unsigned long long)pnp_mem_end(dev,
|
|
i));
|
|
}
|
|
}
|
|
for (i = 0; i < PNP_MAX_IRQ; i++) {
|
|
if (pnp_irq_valid(dev, i)) {
|
|
pnp_printf(buffer, "irq");
|
|
if (pnp_irq_flags(dev, i) & IORESOURCE_DISABLED)
|
|
pnp_printf(buffer, " disabled\n");
|
|
else
|
|
pnp_printf(buffer, " %lld\n",
|
|
(unsigned long long)pnp_irq(dev, i));
|
|
}
|
|
}
|
|
for (i = 0; i < PNP_MAX_DMA; i++) {
|
|
if (pnp_dma_valid(dev, i)) {
|
|
pnp_printf(buffer, "dma");
|
|
if (pnp_dma_flags(dev, i) & IORESOURCE_DISABLED)
|
|
pnp_printf(buffer, " disabled\n");
|
|
else
|
|
pnp_printf(buffer, " %lld\n",
|
|
(unsigned long long)pnp_dma(dev, i));
|
|
}
|
|
}
|
|
ret = (buffer->curr - buf);
|
|
kfree(buffer);
|
|
return ret;
|
|
}
|
|
|
|
extern struct semaphore pnp_res_mutex;
|
|
|
|
static ssize_t
|
|
pnp_set_current_resources(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;
|
|
pnp_info("Device %s cannot be configured because it is in use.",
|
|
dev->dev.bus_id);
|
|
goto done;
|
|
}
|
|
|
|
while (isspace(*buf))
|
|
++buf;
|
|
if (!strnicmp(buf, "disable", 7)) {
|
|
retval = pnp_disable_dev(dev);
|
|
goto done;
|
|
}
|
|
if (!strnicmp(buf, "activate", 8)) {
|
|
retval = pnp_activate_dev(dev);
|
|
goto done;
|
|
}
|
|
if (!strnicmp(buf, "fill", 4)) {
|
|
if (dev->active)
|
|
goto done;
|
|
retval = pnp_auto_config_dev(dev);
|
|
goto done;
|
|
}
|
|
if (!strnicmp(buf, "auto", 4)) {
|
|
if (dev->active)
|
|
goto done;
|
|
pnp_init_resource_table(&dev->res);
|
|
retval = pnp_auto_config_dev(dev);
|
|
goto done;
|
|
}
|
|
if (!strnicmp(buf, "clear", 5)) {
|
|
if (dev->active)
|
|
goto done;
|
|
pnp_init_resource_table(&dev->res);
|
|
goto done;
|
|
}
|
|
if (!strnicmp(buf, "get", 3)) {
|
|
down(&pnp_res_mutex);
|
|
if (pnp_can_read(dev))
|
|
dev->protocol->get(dev, &dev->res);
|
|
up(&pnp_res_mutex);
|
|
goto done;
|
|
}
|
|
if (!strnicmp(buf, "set", 3)) {
|
|
int nport = 0, nmem = 0, nirq = 0, ndma = 0;
|
|
if (dev->active)
|
|
goto done;
|
|
buf += 3;
|
|
pnp_init_resource_table(&dev->res);
|
|
down(&pnp_res_mutex);
|
|
while (1) {
|
|
while (isspace(*buf))
|
|
++buf;
|
|
if (!strnicmp(buf, "io", 2)) {
|
|
buf += 2;
|
|
while (isspace(*buf))
|
|
++buf;
|
|
dev->res.port_resource[nport].start =
|
|
simple_strtoul(buf, &buf, 0);
|
|
while (isspace(*buf))
|
|
++buf;
|
|
if (*buf == '-') {
|
|
buf += 1;
|
|
while (isspace(*buf))
|
|
++buf;
|
|
dev->res.port_resource[nport].end =
|
|
simple_strtoul(buf, &buf, 0);
|
|
} else
|
|
dev->res.port_resource[nport].end =
|
|
dev->res.port_resource[nport].start;
|
|
dev->res.port_resource[nport].flags =
|
|
IORESOURCE_IO;
|
|
nport++;
|
|
if (nport >= PNP_MAX_PORT)
|
|
break;
|
|
continue;
|
|
}
|
|
if (!strnicmp(buf, "mem", 3)) {
|
|
buf += 3;
|
|
while (isspace(*buf))
|
|
++buf;
|
|
dev->res.mem_resource[nmem].start =
|
|
simple_strtoul(buf, &buf, 0);
|
|
while (isspace(*buf))
|
|
++buf;
|
|
if (*buf == '-') {
|
|
buf += 1;
|
|
while (isspace(*buf))
|
|
++buf;
|
|
dev->res.mem_resource[nmem].end =
|
|
simple_strtoul(buf, &buf, 0);
|
|
} else
|
|
dev->res.mem_resource[nmem].end =
|
|
dev->res.mem_resource[nmem].start;
|
|
dev->res.mem_resource[nmem].flags =
|
|
IORESOURCE_MEM;
|
|
nmem++;
|
|
if (nmem >= PNP_MAX_MEM)
|
|
break;
|
|
continue;
|
|
}
|
|
if (!strnicmp(buf, "irq", 3)) {
|
|
buf += 3;
|
|
while (isspace(*buf))
|
|
++buf;
|
|
dev->res.irq_resource[nirq].start =
|
|
dev->res.irq_resource[nirq].end =
|
|
simple_strtoul(buf, &buf, 0);
|
|
dev->res.irq_resource[nirq].flags =
|
|
IORESOURCE_IRQ;
|
|
nirq++;
|
|
if (nirq >= PNP_MAX_IRQ)
|
|
break;
|
|
continue;
|
|
}
|
|
if (!strnicmp(buf, "dma", 3)) {
|
|
buf += 3;
|
|
while (isspace(*buf))
|
|
++buf;
|
|
dev->res.dma_resource[ndma].start =
|
|
dev->res.dma_resource[ndma].end =
|
|
simple_strtoul(buf, &buf, 0);
|
|
dev->res.dma_resource[ndma].flags =
|
|
IORESOURCE_DMA;
|
|
ndma++;
|
|
if (ndma >= PNP_MAX_DMA)
|
|
break;
|
|
continue;
|
|
}
|
|
break;
|
|
}
|
|
up(&pnp_res_mutex);
|
|
goto done;
|
|
}
|
|
|
|
done:
|
|
if (retval < 0)
|
|
return retval;
|
|
return count;
|
|
}
|
|
|
|
static DEVICE_ATTR(resources, S_IRUGO | S_IWUSR,
|
|
pnp_show_current_resources, pnp_set_current_resources);
|
|
|
|
static ssize_t pnp_show_current_ids(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(id, S_IRUGO, pnp_show_current_ids, NULL);
|
|
|
|
int pnp_interface_attach_device(struct pnp_dev *dev)
|
|
{
|
|
int rc = device_create_file(&dev->dev, &dev_attr_options);
|
|
|
|
if (rc)
|
|
goto err;
|
|
rc = device_create_file(&dev->dev, &dev_attr_resources);
|
|
if (rc)
|
|
goto err_opt;
|
|
rc = device_create_file(&dev->dev, &dev_attr_id);
|
|
if (rc)
|
|
goto err_res;
|
|
|
|
return 0;
|
|
|
|
err_res:
|
|
device_remove_file(&dev->dev, &dev_attr_resources);
|
|
err_opt:
|
|
device_remove_file(&dev->dev, &dev_attr_options);
|
|
err:
|
|
return rc;
|
|
}
|