int pnp_check_mem(struct pnp_dev * dev, int idx)
{
int tmp;
struct pnp_dev *tdev;
unsigned long *addr, *end, *taddr, *tend;
addr = &dev->res.mem_resource[idx].start;
end = &dev->res.mem_resource[idx].end;
/* if the resource doesn't exist, don't complain about it */
if (dev->res.mem_resource[idx].flags & IORESOURCE_UNSET)
return 1;
/* check if the resource is already in use, skip if the
* device is active because it itself may be in use */
if(!dev->active) {
if (check_mem_region(*addr, length(addr,end)))
return 0;
}
/* check if the resource is reserved */
for (tmp = 0; tmp < 8; tmp++) {
int raddr = pnp_reserve_mem[tmp << 1];
int rend = pnp_reserve_mem[(tmp << 1) + 1] + raddr - 1;
if (ranged_conflict(addr,end,&raddr,&rend))
return 0;
}
/* check for internal conflicts */
for (tmp = 0; tmp < PNP_MAX_MEM && tmp != idx; tmp++) {
if (dev->res.mem_resource[tmp].flags & IORESOURCE_MEM) {
taddr = &dev->res.mem_resource[tmp].start;
tend = &dev->res.mem_resource[tmp].end;
if (ranged_conflict(addr,end,taddr,tend))
return 0;
}
}
/* check for conflicts with other pnp devices */
pnp_for_each_dev(tdev) {
if (tdev == dev)
continue;
for (tmp = 0; tmp < PNP_MAX_MEM; tmp++) {
if (tdev->res.mem_resource[tmp].flags & IORESOURCE_MEM) {
if (pnp_mem_flags(dev, tmp) & IORESOURCE_DISABLED)
continue;
taddr = &tdev->res.mem_resource[tmp].start;
tend = &tdev->res.mem_resource[tmp].end;
if (ranged_conflict(addr,end,taddr,tend))
return 0;
}
}
}
return 1;
}
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;
}