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authorDon Dugger <n0ano@n0ano.com>2016-06-03 03:33:22 +0000
committerGerrit Code Review <gerrit@172.30.200.206>2016-06-03 03:33:23 +0000
commitda27230f80795d0028333713f036d44c53cb0e68 (patch)
treeb3d379eaf000adf72b36cb01cdf4d79c3e3f064c /qemu/roms/seabios/src/hw/pic.c
parent0e68cb048bb8aadb14675f5d4286d8ab2fc35449 (diff)
parent437fd90c0250dee670290f9b714253671a990160 (diff)
Merge "These changes are the raw update to qemu-2.6."
Diffstat (limited to 'qemu/roms/seabios/src/hw/pic.c')
-rw-r--r--qemu/roms/seabios/src/hw/pic.c14
1 files changed, 14 insertions, 0 deletions
diff --git a/qemu/roms/seabios/src/hw/pic.c b/qemu/roms/seabios/src/hw/pic.c
index 6ff696765..d8b9764c7 100644
--- a/qemu/roms/seabios/src/hw/pic.c
+++ b/qemu/roms/seabios/src/hw/pic.c
@@ -13,12 +13,16 @@
u16
pic_irqmask_read(void)
{
+ if (!CONFIG_HARDWARE_IRQ)
+ return 0;
return inb(PORT_PIC1_DATA) | (inb(PORT_PIC2_DATA) << 8);
}
void
pic_irqmask_write(u16 mask)
{
+ if (!CONFIG_HARDWARE_IRQ)
+ return;
outb(mask, PORT_PIC1_DATA);
outb(mask >> 8, PORT_PIC2_DATA);
}
@@ -26,6 +30,8 @@ pic_irqmask_write(u16 mask)
void
pic_irqmask_mask(u16 off, u16 on)
{
+ if (!CONFIG_HARDWARE_IRQ)
+ return;
u8 pic1off = off, pic1on = on, pic2off = off>>8, pic2on = on>>8;
outb((inb(PORT_PIC1_DATA) & ~pic1off) | pic1on, PORT_PIC1_DATA);
outb((inb(PORT_PIC2_DATA) & ~pic2off) | pic2on, PORT_PIC2_DATA);
@@ -34,6 +40,8 @@ pic_irqmask_mask(u16 off, u16 on)
void
pic_reset(u8 irq0, u8 irq8)
{
+ if (!CONFIG_HARDWARE_IRQ)
+ return;
// Send ICW1 (select OCW1 + will send ICW4)
outb(0x11, PORT_PIC1_CMD);
outb(0x11, PORT_PIC2_CMD);
@@ -60,6 +68,8 @@ pic_setup(void)
void
enable_hwirq(int hwirq, struct segoff_s func)
{
+ if (!CONFIG_HARDWARE_IRQ)
+ return;
pic_irqmask_mask(1 << hwirq, 0);
int vector;
if (hwirq < 8)
@@ -72,6 +82,8 @@ enable_hwirq(int hwirq, struct segoff_s func)
static u8
pic_isr1_read(void)
{
+ if (!CONFIG_HARDWARE_IRQ)
+ return 0;
// 0x0b == select OCW1 + read ISR
outb(0x0b, PORT_PIC1_CMD);
return inb(PORT_PIC1_CMD);
@@ -80,6 +92,8 @@ pic_isr1_read(void)
static u8
pic_isr2_read(void)
{
+ if (!CONFIG_HARDWARE_IRQ)
+ return 0;
// 0x0b == select OCW1 + read ISR
outb(0x0b, PORT_PIC2_CMD);
return inb(PORT_PIC2_CMD);