*
* based on isapnp.c resource management (c) Jaroslav Kysela <perex@perex.cz>
* Copyright 2003 Adam Belay <ambx1@neo.rr.com>
+ * Copyright (C) 2008 Hewlett-Packard Development Company, L.P.
+ * Bjorn Helgaas <bjorn.helgaas@hp.com>
*/
#include <linux/module.h>
* option registration
*/
-struct pnp_option *pnp_build_option(int priority)
+struct pnp_option *pnp_build_option(struct pnp_dev *dev, unsigned long type,
+ unsigned int option_flags)
{
- struct pnp_option *option = pnp_alloc(sizeof(struct pnp_option));
+ struct pnp_option *option;
+ option = kzalloc(sizeof(struct pnp_option), GFP_KERNEL);
if (!option)
return NULL;
- option->priority = priority & 0xff;
- /* make sure the priority is valid */
- if (option->priority > PNP_RES_PRIORITY_FUNCTIONAL)
- option->priority = PNP_RES_PRIORITY_INVALID;
+ option->flags = option_flags;
+ option->type = type;
+ list_add_tail(&option->list, &dev->options);
return option;
}
-struct pnp_option *pnp_register_independent_option(struct pnp_dev *dev)
-{
- struct pnp_option *option;
-
- option = pnp_build_option(PNP_RES_PRIORITY_PREFERRED);
-
- /* this should never happen but if it does we'll try to continue */
- if (dev->independent)
- dev_err(&dev->dev, "independent resource already registered\n");
- dev->independent = option;
-
- dev_dbg(&dev->dev, "new independent option\n");
- return option;
-}
-
-struct pnp_option *pnp_register_dependent_option(struct pnp_dev *dev,
- int priority)
-{
- struct pnp_option *option;
-
- option = pnp_build_option(priority);
-
- if (dev->dependent) {
- struct pnp_option *parent = dev->dependent;
- while (parent->next)
- parent = parent->next;
- parent->next = option;
- } else
- dev->dependent = option;
-
- dev_dbg(&dev->dev, "new dependent option (priority %#x)\n", priority);
- return option;
-}
-
-int pnp_register_irq_resource(struct pnp_dev *dev, struct pnp_option *option,
+int pnp_register_irq_resource(struct pnp_dev *dev, unsigned int option_flags,
pnp_irq_mask_t *map, unsigned char flags)
{
- struct pnp_irq *data, *ptr;
-#ifdef DEBUG
- char buf[PNP_IRQ_NR]; /* hex-encoded, so this is overkill but safe */
-#endif
+ struct pnp_option *option;
+ struct pnp_irq *irq;
- data = kzalloc(sizeof(struct pnp_irq), GFP_KERNEL);
- if (!data)
+ option = pnp_build_option(dev, IORESOURCE_IRQ, option_flags);
+ if (!option)
return -ENOMEM;
- data->map = *map;
- data->flags = flags;
-
- ptr = option->irq;
- while (ptr && ptr->next)
- ptr = ptr->next;
- if (ptr)
- ptr->next = data;
- else
- option->irq = data;
+ irq = &option->u.irq;
+ irq->map = *map;
+ irq->flags = flags;
#ifdef CONFIG_PCI
{
int i;
for (i = 0; i < 16; i++)
- if (test_bit(i, data->map.bits))
+ if (test_bit(i, irq->map.bits))
pcibios_penalize_isa_irq(i, 0);
}
#endif
-#ifdef DEBUG
- bitmap_scnprintf(buf, sizeof(buf), data->map.bits, PNP_IRQ_NR);
- dev_dbg(&dev->dev, " irq bitmask %s flags %#x\n", buf,
- data->flags);
-#endif
+ dbg_pnp_show_option(dev, option);
return 0;
}
-int pnp_register_dma_resource(struct pnp_dev *dev, struct pnp_option *option,
+int pnp_register_dma_resource(struct pnp_dev *dev, unsigned int option_flags,
unsigned char map, unsigned char flags)
{
- struct pnp_dma *data, *ptr;
+ struct pnp_option *option;
+ struct pnp_dma *dma;
- data = kzalloc(sizeof(struct pnp_dma), GFP_KERNEL);
- if (!data)
+ option = pnp_build_option(dev, IORESOURCE_DMA, option_flags);
+ if (!option)
return -ENOMEM;
- data->map = map;
- data->flags = flags;
+ dma = &option->u.dma;
+ dma->map = map;
+ dma->flags = flags;
- ptr = option->dma;
- while (ptr && ptr->next)
- ptr = ptr->next;
- if (ptr)
- ptr->next = data;
- else
- option->dma = data;
-
- dev_dbg(&dev->dev, " dma bitmask %#x flags %#x\n", data->map,
- data->flags);
+ dbg_pnp_show_option(dev, option);
return 0;
}
-int pnp_register_port_resource(struct pnp_dev *dev, struct pnp_option *option,
+int pnp_register_port_resource(struct pnp_dev *dev, unsigned int option_flags,
resource_size_t min, resource_size_t max,
resource_size_t align, resource_size_t size,
unsigned char flags)
{
- struct pnp_port *data, *ptr;
+ struct pnp_option *option;
+ struct pnp_port *port;
- data = kzalloc(sizeof(struct pnp_port), GFP_KERNEL);
- if (!data)
+ option = pnp_build_option(dev, IORESOURCE_IO, option_flags);
+ if (!option)
return -ENOMEM;
- data->min = min;
- data->max = max;
- data->align = align;
- data->size = size;
- data->flags = flags;
-
- ptr = option->port;
- while (ptr && ptr->next)
- ptr = ptr->next;
- if (ptr)
- ptr->next = data;
- else
- option->port = data;
-
- dev_dbg(&dev->dev, " io "
- "min %#llx max %#llx align %lld size %lld flags %#x\n",
- (unsigned long long) data->min,
- (unsigned long long) data->max,
- (unsigned long long) data->align,
- (unsigned long long) data->size, data->flags);
+ port = &option->u.port;
+ port->min = min;
+ port->max = max;
+ port->align = align;
+ port->size = size;
+ port->flags = flags;
+
+ dbg_pnp_show_option(dev, option);
return 0;
}
-int pnp_register_mem_resource(struct pnp_dev *dev, struct pnp_option *option,
+int pnp_register_mem_resource(struct pnp_dev *dev, unsigned int option_flags,
resource_size_t min, resource_size_t max,
resource_size_t align, resource_size_t size,
unsigned char flags)
{
- struct pnp_mem *data, *ptr;
+ struct pnp_option *option;
+ struct pnp_mem *mem;
- data = kzalloc(sizeof(struct pnp_mem), GFP_KERNEL);
- if (!data)
+ option = pnp_build_option(dev, IORESOURCE_MEM, option_flags);
+ if (!option)
return -ENOMEM;
- data->min = min;
- data->max = max;
- data->align = align;
- data->size = size;
- data->flags = flags;
-
- ptr = option->mem;
- while (ptr && ptr->next)
- ptr = ptr->next;
- if (ptr)
- ptr->next = data;
- else
- option->mem = data;
-
- dev_dbg(&dev->dev, " mem "
- "min %#llx max %#llx align %lld size %lld flags %#x\n",
- (unsigned long long) data->min,
- (unsigned long long) data->max,
- (unsigned long long) data->align,
- (unsigned long long) data->size, data->flags);
- return 0;
-}
-
-static void pnp_free_port(struct pnp_port *port)
-{
- struct pnp_port *next;
-
- while (port) {
- next = port->next;
- kfree(port);
- port = next;
- }
-}
-
-static void pnp_free_irq(struct pnp_irq *irq)
-{
- struct pnp_irq *next;
-
- while (irq) {
- next = irq->next;
- kfree(irq);
- irq = next;
- }
-}
+ mem = &option->u.mem;
+ mem->min = min;
+ mem->max = max;
+ mem->align = align;
+ mem->size = size;
+ mem->flags = flags;
-static void pnp_free_dma(struct pnp_dma *dma)
-{
- struct pnp_dma *next;
-
- while (dma) {
- next = dma->next;
- kfree(dma);
- dma = next;
- }
+ dbg_pnp_show_option(dev, option);
+ return 0;
}
-static void pnp_free_mem(struct pnp_mem *mem)
+void pnp_free_options(struct pnp_dev *dev)
{
- struct pnp_mem *next;
+ struct pnp_option *option, *tmp;
- while (mem) {
- next = mem->next;
- kfree(mem);
- mem = next;
- }
-}
-
-void pnp_free_option(struct pnp_option *option)
-{
- struct pnp_option *next;
-
- while (option) {
- next = option->next;
- pnp_free_port(option->port);
- pnp_free_irq(option->irq);
- pnp_free_dma(option->dma);
- pnp_free_mem(option->mem);
+ list_for_each_entry_safe(option, tmp, &dev->options, list) {
+ list_del(&option->list);
kfree(option);
- option = next;
}
}
return IRQ_HANDLED;
}
+#ifdef CONFIG_PCI
+static int pci_dev_uses_irq(struct pnp_dev *pnp, struct pci_dev *pci,
+ unsigned int irq)
+{
+ u32 class;
+ u8 progif;
+
+ if (pci->irq == irq) {
+ pnp_dbg(&pnp->dev, " device %s using irq %d\n",
+ pci_name(pci), irq);
+ return 1;
+ }
+
+ /*
+ * See pci_setup_device() and ata_pci_sff_activate_host() for
+ * similar IDE legacy detection.
+ */
+ pci_read_config_dword(pci, PCI_CLASS_REVISION, &class);
+ class >>= 8; /* discard revision ID */
+ progif = class & 0xff;
+ class >>= 8;
+
+ if (class == PCI_CLASS_STORAGE_IDE) {
+ /*
+ * Unless both channels are native-PCI mode only,
+ * treat the compatibility IRQs as busy.
+ */
+ if ((progif & 0x5) != 0x5)
+ if (pci_get_legacy_ide_irq(pci, 0) == irq ||
+ pci_get_legacy_ide_irq(pci, 1) == irq) {
+ pnp_dbg(&pnp->dev, " legacy IDE device %s "
+ "using irq %d\n", pci_name(pci), irq);
+ return 1;
+ }
+ }
+
+ return 0;
+}
+#endif
+
+static int pci_uses_irq(struct pnp_dev *pnp, unsigned int irq)
+{
+#ifdef CONFIG_PCI
+ struct pci_dev *pci = NULL;
+
+ for_each_pci_dev(pci) {
+ if (pci_dev_uses_irq(pnp, pci, irq)) {
+ pci_dev_put(pci);
+ return 1;
+ }
+ }
+#endif
+ return 0;
+}
+
int pnp_check_irq(struct pnp_dev *dev, struct resource *res)
{
int i;
}
}
-#ifdef CONFIG_PCI
/* check if the resource is being used by a pci device */
- {
- struct pci_dev *pci = NULL;
- for_each_pci_dev(pci) {
- if (pci->irq == *irq) {
- pci_dev_put(pci);
- return 0;
- }
- }
- }
-#endif
+ if (pci_uses_irq(dev, *irq))
+ return 0;
/* check if the resource is already in use, skip if the
* device is active because it itself may be in use */
#endif
}
-int pnp_resource_type(struct resource *res)
+unsigned long pnp_resource_type(struct resource *res)
{
return res->flags & (IORESOURCE_IO | IORESOURCE_MEM |
IORESOURCE_IRQ | IORESOURCE_DMA);
}
struct resource *pnp_get_resource(struct pnp_dev *dev,
- unsigned int type, unsigned int num)
+ unsigned long type, unsigned int num)
{
struct pnp_resource *pnp_res;
struct resource *res;
res->start = irq;
res->end = irq;
- dev_dbg(&dev->dev, " add irq %d flags %#x\n", irq, flags);
+ pnp_dbg(&dev->dev, " add %pr\n", res);
return pnp_res;
}
res->start = dma;
res->end = dma;
- dev_dbg(&dev->dev, " add dma %d flags %#x\n", dma, flags);
+ pnp_dbg(&dev->dev, " add %pr\n", res);
return pnp_res;
}
res->start = start;
res->end = end;
- dev_dbg(&dev->dev, " add io %#llx-%#llx flags %#x\n",
- (unsigned long long) start, (unsigned long long) end, flags);
+ pnp_dbg(&dev->dev, " add %pr\n", res);
return pnp_res;
}
res->start = start;
res->end = end;
- dev_dbg(&dev->dev, " add mem %#llx-%#llx flags %#x\n",
- (unsigned long long) start, (unsigned long long) end, flags);
+ pnp_dbg(&dev->dev, " add %pr\n", res);
return pnp_res;
}
-static int pnp_possible_option(struct pnp_option *option, int type,
- resource_size_t start, resource_size_t size)
+/*
+ * Determine whether the specified resource is a possible configuration
+ * for this device.
+ */
+int pnp_possible_config(struct pnp_dev *dev, int type, resource_size_t start,
+ resource_size_t size)
{
- struct pnp_option *tmp;
+ struct pnp_option *option;
struct pnp_port *port;
struct pnp_mem *mem;
struct pnp_irq *irq;
struct pnp_dma *dma;
- if (!option)
- return 0;
+ list_for_each_entry(option, &dev->options, list) {
+ if (option->type != type)
+ continue;
- for (tmp = option; tmp; tmp = tmp->next) {
- switch (type) {
+ switch (option->type) {
case IORESOURCE_IO:
- for (port = tmp->port; port; port = port->next) {
- if (port->min == start && port->size == size)
- return 1;
- }
+ port = &option->u.port;
+ if (port->min == start && port->size == size)
+ return 1;
break;
case IORESOURCE_MEM:
- for (mem = tmp->mem; mem; mem = mem->next) {
- if (mem->min == start && mem->size == size)
- return 1;
- }
+ mem = &option->u.mem;
+ if (mem->min == start && mem->size == size)
+ return 1;
break;
case IORESOURCE_IRQ:
- for (irq = tmp->irq; irq; irq = irq->next) {
- if (start < PNP_IRQ_NR &&
- test_bit(start, irq->map.bits))
- return 1;
- }
+ irq = &option->u.irq;
+ if (start < PNP_IRQ_NR &&
+ test_bit(start, irq->map.bits))
+ return 1;
break;
case IORESOURCE_DMA:
- for (dma = tmp->dma; dma; dma = dma->next) {
- if (dma->map & (1 << start))
- return 1;
- }
+ dma = &option->u.dma;
+ if (dma->map & (1 << start))
+ return 1;
break;
}
}
return 0;
}
+EXPORT_SYMBOL(pnp_possible_config);
-/*
- * Determine whether the specified resource is a possible configuration
- * for this device.
- */
-int pnp_possible_config(struct pnp_dev *dev, int type, resource_size_t start,
- resource_size_t size)
+int pnp_range_reserved(resource_size_t start, resource_size_t end)
{
- if (pnp_possible_option(dev->independent, type, start, size))
- return 1;
-
- if (pnp_possible_option(dev->dependent, type, start, size))
- return 1;
-
+ 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_possible_config);
+EXPORT_SYMBOL(pnp_range_reserved);
/* format is: pnp_reserve_irq=irq1[,irq2] .... */
static int __init pnp_setup_reserve_irq(char *str)
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff