summaryrefslogtreecommitdiffstats
path: root/drivers/pnp/support.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/pnp/support.c')
-rw-r--r--drivers/pnp/support.c171
1 files changed, 146 insertions, 25 deletions
diff --git a/drivers/pnp/support.c b/drivers/pnp/support.c
index 95b076c..bbf78ef 100644
--- a/drivers/pnp/support.c
+++ b/drivers/pnp/support.c
@@ -2,6 +2,8 @@
* support.c - standard functions for the use of pnp protocol drivers
*
* 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>
@@ -16,6 +18,10 @@
*/
int pnp_is_active(struct pnp_dev *dev)
{
+ /*
+ * I don't think this is very reliable because pnp_disable_dev()
+ * only clears out auto-assigned resources.
+ */
if (!pnp_port_start(dev, 0) && pnp_port_len(dev, 0) <= 1 &&
!pnp_mem_start(dev, 0) && pnp_mem_len(dev, 0) <= 1 &&
pnp_irq(dev, 0) == -1 && pnp_dma(dev, 0) == -1)
@@ -52,39 +58,154 @@ void pnp_eisa_id_to_string(u32 id, char *str)
str[7] = '\0';
}
+char *pnp_resource_type_name(struct resource *res)
+{
+ switch (pnp_resource_type(res)) {
+ case IORESOURCE_IO:
+ return "io";
+ case IORESOURCE_MEM:
+ return "mem";
+ case IORESOURCE_IRQ:
+ return "irq";
+ case IORESOURCE_DMA:
+ return "dma";
+ }
+ return NULL;
+}
+
void dbg_pnp_show_resources(struct pnp_dev *dev, char *desc)
{
#ifdef DEBUG
+ char buf[128];
+ int len = 0;
+ struct pnp_resource *pnp_res;
struct resource *res;
- int i;
- dev_dbg(&dev->dev, "current resources: %s\n", desc);
-
- for (i = 0; i < PNP_MAX_IRQ; i++) {
- res = pnp_get_resource(dev, IORESOURCE_IRQ, i);
- if (res && !(res->flags & IORESOURCE_UNSET))
- dev_dbg(&dev->dev, " irq %lld flags %#lx\n",
- (unsigned long long) res->start, res->flags);
+ if (list_empty(&dev->resources)) {
+ dev_dbg(&dev->dev, "%s: no current resources\n", desc);
+ return;
}
- for (i = 0; i < PNP_MAX_DMA; i++) {
- res = pnp_get_resource(dev, IORESOURCE_DMA, i);
- if (res && !(res->flags & IORESOURCE_UNSET))
- dev_dbg(&dev->dev, " dma %lld flags %#lx\n",
- (unsigned long long) res->start, res->flags);
+
+ dev_dbg(&dev->dev, "%s: current resources:\n", desc);
+ list_for_each_entry(pnp_res, &dev->resources, list) {
+ res = &pnp_res->res;
+
+ len += snprintf(buf + len, sizeof(buf) - len, " %-3s ",
+ pnp_resource_type_name(res));
+
+ if (res->flags & IORESOURCE_DISABLED) {
+ dev_dbg(&dev->dev, "%sdisabled\n", buf);
+ continue;
+ }
+
+ switch (pnp_resource_type(res)) {
+ case IORESOURCE_IO:
+ case IORESOURCE_MEM:
+ len += snprintf(buf + len, sizeof(buf) - len,
+ "%#llx-%#llx flags %#lx",
+ (unsigned long long) res->start,
+ (unsigned long long) res->end,
+ res->flags);
+ break;
+ case IORESOURCE_IRQ:
+ case IORESOURCE_DMA:
+ len += snprintf(buf + len, sizeof(buf) - len,
+ "%lld flags %#lx",
+ (unsigned long long) res->start,
+ res->flags);
+ break;
+ }
+ dev_dbg(&dev->dev, "%s\n", buf);
}
- for (i = 0; i < PNP_MAX_PORT; i++) {
- res = pnp_get_resource(dev, IORESOURCE_IO, i);
- if (res && !(res->flags & IORESOURCE_UNSET))
- dev_dbg(&dev->dev, " io %#llx-%#llx flags %#lx\n",
- (unsigned long long) res->start,
- (unsigned long long) res->end, res->flags);
+#endif
+}
+
+char *pnp_option_priority_name(struct pnp_option *option)
+{
+ switch (pnp_option_priority(option)) {
+ case PNP_RES_PRIORITY_PREFERRED:
+ return "preferred";
+ case PNP_RES_PRIORITY_ACCEPTABLE:
+ return "acceptable";
+ case PNP_RES_PRIORITY_FUNCTIONAL:
+ return "functional";
}
- for (i = 0; i < PNP_MAX_MEM; i++) {
- res = pnp_get_resource(dev, IORESOURCE_MEM, i);
- if (res && !(res->flags & IORESOURCE_UNSET))
- dev_dbg(&dev->dev, " mem %#llx-%#llx flags %#lx\n",
- (unsigned long long) res->start,
- (unsigned long long) res->end, res->flags);
+ return "invalid";
+}
+
+void dbg_pnp_show_option(struct pnp_dev *dev, struct pnp_option *option)
+{
+#ifdef DEBUG
+ char buf[128];
+ int len = 0, i;
+ struct pnp_port *port;
+ struct pnp_mem *mem;
+ struct pnp_irq *irq;
+ struct pnp_dma *dma;
+
+ if (pnp_option_is_dependent(option))
+ len += snprintf(buf + len, sizeof(buf) - len,
+ " dependent set %d (%s) ",
+ pnp_option_set(option),
+ pnp_option_priority_name(option));
+ else
+ len += snprintf(buf + len, sizeof(buf) - len, " independent ");
+
+ switch (option->type) {
+ case IORESOURCE_IO:
+ port = &option->u.port;
+ len += snprintf(buf + len, sizeof(buf) - len, "io min %#llx "
+ "max %#llx align %lld size %lld flags %#x",
+ (unsigned long long) port->min,
+ (unsigned long long) port->max,
+ (unsigned long long) port->align,
+ (unsigned long long) port->size, port->flags);
+ break;
+ case IORESOURCE_MEM:
+ mem = &option->u.mem;
+ len += snprintf(buf + len, sizeof(buf) - len, "mem min %#llx "
+ "max %#llx align %lld size %lld flags %#x",
+ (unsigned long long) mem->min,
+ (unsigned long long) mem->max,
+ (unsigned long long) mem->align,
+ (unsigned long long) mem->size, mem->flags);
+ break;
+ case IORESOURCE_IRQ:
+ irq = &option->u.irq;
+ len += snprintf(buf + len, sizeof(buf) - len, "irq");
+ if (bitmap_empty(irq->map.bits, PNP_IRQ_NR))
+ len += snprintf(buf + len, sizeof(buf) - len,
+ " <none>");
+ else {
+ for (i = 0; i < PNP_IRQ_NR; i++)
+ if (test_bit(i, irq->map.bits))
+ len += snprintf(buf + len,
+ sizeof(buf) - len,
+ " %d", i);
+ }
+ len += snprintf(buf + len, sizeof(buf) - len, " flags %#x",
+ irq->flags);
+ if (irq->flags & IORESOURCE_IRQ_OPTIONAL)
+ len += snprintf(buf + len, sizeof(buf) - len,
+ " (optional)");
+ break;
+ case IORESOURCE_DMA:
+ dma = &option->u.dma;
+ len += snprintf(buf + len, sizeof(buf) - len, "dma");
+ if (!dma->map)
+ len += snprintf(buf + len, sizeof(buf) - len,
+ " <none>");
+ else {
+ for (i = 0; i < 8; i++)
+ if (dma->map & (1 << i))
+ len += snprintf(buf + len,
+ sizeof(buf) - len,
+ " %d", i);
+ }
+ len += snprintf(buf + len, sizeof(buf) - len, " (bitmask %#x) "
+ "flags %#x", dma->map, dma->flags);
+ break;
}
+ dev_dbg(&dev->dev, "%s\n", buf);
#endif
}
OpenPOWER on IntegriCloud