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path: root/drivers/pnp/resource.c
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Diffstat (limited to 'drivers/pnp/resource.c')
-rw-r--r--drivers/pnp/resource.c92
1 files changed, 76 insertions, 16 deletions
diff --git a/drivers/pnp/resource.c b/drivers/pnp/resource.c
index f604061d2bb..782e8228957 100644
--- a/drivers/pnp/resource.c
+++ b/drivers/pnp/resource.c
@@ -8,6 +8,7 @@
*/
#include <linux/module.h>
+#include <linux/slab.h>
#include <linux/errno.h>
#include <linux/interrupt.h>
#include <linux/kernel.h>
@@ -30,7 +31,7 @@ static int pnp_reserve_mem[16] = {[0 ... 15] = -1 }; /* reserve (don't use) some
* option registration
*/
-struct pnp_option *pnp_build_option(struct pnp_dev *dev, unsigned long type,
+static struct pnp_option *pnp_build_option(struct pnp_dev *dev, unsigned long type,
unsigned int option_flags)
{
struct pnp_option *option;
@@ -210,6 +211,8 @@ int pnp_check_port(struct pnp_dev *dev, struct resource *res)
if (tres->flags & IORESOURCE_IO) {
if (cannot_compare(tres->flags))
continue;
+ if (tres->flags & IORESOURCE_WINDOW)
+ continue;
tport = &tres->start;
tend = &tres->end;
if (ranged_conflict(port, end, tport, tend))
@@ -270,6 +273,8 @@ int pnp_check_mem(struct pnp_dev *dev, struct resource *res)
if (tres->flags & IORESOURCE_MEM) {
if (cannot_compare(tres->flags))
continue;
+ if (tres->flags & IORESOURCE_WINDOW)
+ continue;
taddr = &tres->start;
tend = &tres->end;
if (ranged_conflict(addr, end, taddr, tend))
@@ -355,7 +360,7 @@ int pnp_check_irq(struct pnp_dev *dev, struct resource *res)
return 1;
/* check if the resource is valid */
- if (*irq < 0 || *irq > 15)
+ if (*irq > 15)
return 0;
/* check if the resource is reserved */
@@ -380,7 +385,7 @@ int pnp_check_irq(struct pnp_dev *dev, struct resource *res)
* device is active because it itself may be in use */
if (!dev->active) {
if (request_irq(*irq, pnp_test_handler,
- IRQF_DISABLED | IRQF_PROBE_SHARED, "pnp", NULL))
+ IRQF_PROBE_SHARED, "pnp", NULL))
return 0;
free_irq(*irq, NULL);
}
@@ -404,9 +409,9 @@ int pnp_check_irq(struct pnp_dev *dev, struct resource *res)
return 1;
}
+#ifdef CONFIG_ISA_DMA_API
int pnp_check_dma(struct pnp_dev *dev, struct resource *res)
{
-#ifndef CONFIG_IA64
int i;
struct pnp_dev *tdev;
struct resource *tres;
@@ -419,7 +424,7 @@ int pnp_check_dma(struct pnp_dev *dev, struct resource *res)
return 1;
/* check if the resource is valid */
- if (*dma < 0 || *dma == 4 || *dma > 7)
+ if (*dma == 4 || *dma > 7)
return 0;
/* check if the resource is reserved */
@@ -461,16 +466,14 @@ int pnp_check_dma(struct pnp_dev *dev, struct resource *res)
}
return 1;
-#else
- /* IA64 does not have legacy DMA */
- return 0;
-#endif
}
+#endif /* CONFIG_ISA_DMA_API */
unsigned long pnp_resource_type(struct resource *res)
{
return res->flags & (IORESOURCE_IO | IORESOURCE_MEM |
- IORESOURCE_IRQ | IORESOURCE_DMA);
+ IORESOURCE_IRQ | IORESOURCE_DMA |
+ IORESOURCE_BUS);
}
struct resource *pnp_get_resource(struct pnp_dev *dev,
@@ -500,6 +503,23 @@ static struct pnp_resource *pnp_new_resource(struct pnp_dev *dev)
return pnp_res;
}
+struct pnp_resource *pnp_add_resource(struct pnp_dev *dev,
+ struct resource *res)
+{
+ struct pnp_resource *pnp_res;
+
+ pnp_res = pnp_new_resource(dev);
+ if (!pnp_res) {
+ dev_err(&dev->dev, "can't add resource %pR\n", res);
+ return NULL;
+ }
+
+ pnp_res->res = *res;
+ pnp_res->res.name = dev->name;
+ dev_dbg(&dev->dev, "%pR\n", res);
+ return pnp_res;
+}
+
struct pnp_resource *pnp_add_irq_resource(struct pnp_dev *dev, int irq,
int flags)
{
@@ -517,7 +537,7 @@ struct pnp_resource *pnp_add_irq_resource(struct pnp_dev *dev, int irq,
res->start = irq;
res->end = irq;
- pnp_dbg(&dev->dev, " add irq %d flags %#x\n", irq, flags);
+ dev_printk(KERN_DEBUG, &dev->dev, "%pR\n", res);
return pnp_res;
}
@@ -538,7 +558,7 @@ struct pnp_resource *pnp_add_dma_resource(struct pnp_dev *dev, int dma,
res->start = dma;
res->end = dma;
- pnp_dbg(&dev->dev, " add dma %d flags %#x\n", dma, flags);
+ dev_printk(KERN_DEBUG, &dev->dev, "%pR\n", res);
return pnp_res;
}
@@ -562,8 +582,7 @@ struct pnp_resource *pnp_add_io_resource(struct pnp_dev *dev,
res->start = start;
res->end = end;
- pnp_dbg(&dev->dev, " add io %#llx-%#llx flags %#x\n",
- (unsigned long long) start, (unsigned long long) end, flags);
+ dev_printk(KERN_DEBUG, &dev->dev, "%pR\n", res);
return pnp_res;
}
@@ -587,8 +606,31 @@ struct pnp_resource *pnp_add_mem_resource(struct pnp_dev *dev,
res->start = start;
res->end = end;
- pnp_dbg(&dev->dev, " add mem %#llx-%#llx flags %#x\n",
- (unsigned long long) start, (unsigned long long) end, flags);
+ dev_printk(KERN_DEBUG, &dev->dev, "%pR\n", res);
+ return pnp_res;
+}
+
+struct pnp_resource *pnp_add_bus_resource(struct pnp_dev *dev,
+ resource_size_t start,
+ resource_size_t end)
+{
+ struct pnp_resource *pnp_res;
+ struct resource *res;
+
+ pnp_res = pnp_new_resource(dev);
+ if (!pnp_res) {
+ dev_err(&dev->dev, "can't add resource for BUS %#llx-%#llx\n",
+ (unsigned long long) start,
+ (unsigned long long) end);
+ return NULL;
+ }
+
+ res = &pnp_res->res;
+ res->flags = IORESOURCE_BUS;
+ res->start = start;
+ res->end = end;
+
+ dev_printk(KERN_DEBUG, &dev->dev, "%pR\n", res);
return pnp_res;
}
@@ -638,6 +680,24 @@ int pnp_possible_config(struct pnp_dev *dev, int type, resource_size_t start,
}
EXPORT_SYMBOL(pnp_possible_config);
+int pnp_range_reserved(resource_size_t start, resource_size_t end)
+{
+ struct pnp_dev *dev;
+ struct pnp_resource *pnp_res;
+ resource_size_t *dev_start, *dev_end;
+
+ pnp_for_each_dev(dev) {
+ list_for_each_entry(pnp_res, &dev->resources, list) {
+ dev_start = &pnp_res->res.start;
+ dev_end = &pnp_res->res.end;
+ if (ranged_conflict(&start, &end, dev_start, dev_end))
+ return 1;
+ }
+ }
+ return 0;
+}
+EXPORT_SYMBOL(pnp_range_reserved);
+
/* format is: pnp_reserve_irq=irq1[,irq2] .... */
static int __init pnp_setup_reserve_irq(char *str)
{
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-12-05 20:33:38 +0000