From: Randy Dunlap <[email protected]>
Allow the ACPI HPET description table to use a resource type
of FIXED_MEM32 for the HPET reource. Use the fixed resoure
size of 1 KB for the HPET resource as per the HPET spec.
Signed-off-by: Randy Dunlap <[email protected]>
Acked-by: Bob Picco <[email protected]>
---
drivers/char/hpet.c | 17 +++++++++++++++++
1 files changed, 17 insertions(+)
diff -Naurp linux-2614-rc4/drivers/char/hpet.c~hpet_fixmem32 linux-2614-rc4/drivers/char/hpet.c
--- linux-2614-rc4/drivers/char/hpet.c~hpet_fixmem32 2005-10-12 09:40:24.000000000 -0700
+++ linux-2614-rc4/drivers/char/hpet.c 2005-10-12 09:47:20.000000000 -0700
@@ -49,6 +49,8 @@
#define HPET_USER_FREQ (64)
#define HPET_DRIFT (500)
+#define HPET_RANGE_SIZE 1024 /* from HPET spec */
+
static u32 hpet_ntimer, hpet_nhpet, hpet_max_freq = HPET_USER_FREQ;
/* A lock for concurrent access by app and isr hpet activity. */
@@ -896,6 +898,21 @@ static acpi_status hpet_resources(struct
for (hpetp = hpets; hpetp; hpetp = hpetp->hp_next)
if (hpetp->hp_hpet == hdp->hd_address)
return -EBUSY;
+ } else if (res->id == ACPI_RSTYPE_FIXED_MEM32) {
+ struct acpi_resource_fixed_mem32 *fixmem32;
+
+ fixmem32 = &res->data.fixed_memory32;
+ if (!fixmem32)
+ return -EINVAL;
+
+ hdp->hd_phys_address = fixmem32->range_base_address;
+ hdp->hd_address = ioremap(fixmem32->range_base_address,
+ HPET_RANGE_SIZE);
+
+ for (hpetp = hpets; hpetp; hpetp = hpetp->hp_next)
+ if (hpetp->hp_hpet == hdp->hd_address) {
+ return -EBUSY;
+ }
} else if (res->id == ACPI_RSTYPE_EXT_IRQ) {
struct acpi_resource_ext_irq *irqp;
int i;
---
-
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