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linux/drivers/pnp/interface.c
Linus Torvalds 1da177e4c3 Linux-2.6.12-rc2 
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!
2005-04-16 15:20:36 -07:00

469 lines
11 KiB
C
Raw Blame History

/*
* 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@suse.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, 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, 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%lx-0x%lx\n",
pnp_port_start(dev, i),
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%lx-0x%lx\n",
pnp_mem_start(dev, i),
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," %ld\n",
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," %ld\n",
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, 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, 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)
{
device_create_file(&dev->dev,&dev_attr_options);
device_create_file(&dev->dev,&dev_attr_resources);
device_create_file(&dev->dev,&dev_attr_id);
return 0;
}
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