@@ -590,6 +590,13 @@ struct pci_status {
static struct gpe_regs gpe;
static struct pci_status pci0_status;
+static uint32_t gpe_read_val(uint16_t val, uint32_t addr)
+{
+ if (addr & 1)
+ return (val >> 8) & 0xff;
+ return val & 0xff;
+}
+
static uint32_t gpe_readb(void *opaque, uint32_t addr)
{
uint32_t val = 0;
@@ -603,16 +610,12 @@ static uint32_t gpe_readb(void *opaque, uint32_t addr)
break;
case GPE_BASE:
- val = g->sts & 0xFF;
- break;
case GPE_BASE + 1:
- val = (g->sts >> 8) & 0xFF;
+ val = gpe_read_val(g->sts, addr);
break;
case GPE_BASE + 2:
- val = g->en & 0xFF;
- break;
case GPE_BASE + 3:
- val = (g->en >> 8) & 0xFF;
+ val = gpe_read_val(g->en, addr);
break;
default:
break;
@@ -624,6 +627,26 @@ static uint32_t gpe_readb(void *opaque, uint32_t addr)
return val;
}
+static void gpe_write_val(uint16_t *cur, int addr, uint32_t val)
+{
+ if (addr & 1)
+ *cur = (*cur & 0xff) | (val << 8);
+ else
+ *cur = (*cur & 0xff00) | (val & 0xff);
+}
+
+static void gpe_reset_val(uint16_t *cur, int addr, uint32_t val)
+{
+ uint16_t x1, x0 = val & 0xff;
+ int shift = (addr & 1) ? 8 : 0;
+
+ x1 = (*cur >> shift) & 0xff;
+
+ x1 = x1 & ~x0;
+
+ *cur = (*cur & (0xff << (8 - shift))) | (x1 << shift);
+}
+
static void gpe_writeb(void *opaque, uint32_t addr, uint32_t val)
{
struct gpe_regs *g = opaque;
@@ -636,16 +659,12 @@ static void gpe_writeb(void *opaque, uint32_t addr, uint32_t val)
break;
case GPE_BASE:
- g->sts = (g->sts & ~0xFFFF) | (val & 0xFFFF);
- break;
case GPE_BASE + 1:
- g->sts = (g->sts & 0xFFFF) | (val << 8);
+ gpe_reset_val(&g->sts, addr, val);
break;
case GPE_BASE + 2:
- g->en = (g->en & ~0xFFFF) | (val & 0xFFFF);
- break;
case GPE_BASE + 3:
- g->en = (g->en & 0xFFFF) | (val << 8);
+ gpe_write_val(&g->en, addr, val);
break;
default:
break;
For STS register bit are cleared by writing 1 into it. Signed-off-by: Gleb Natapov <gleb@redhat.com> --- qemu/hw/acpi.c | 43 +++++++++++++++++++++++++++++++------------ 1 files changed, 31 insertions(+), 12 deletions(-) -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html