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[Qemu-devel] [PATCH 11/12] hw/sysbus: Add sysbus_mmio_unmap() for unmapp
From: |
Peter Maydell |
Subject: |
[Qemu-devel] [PATCH 11/12] hw/sysbus: Add sysbus_mmio_unmap() for unmapping a region |
Date: |
Fri, 15 Jul 2011 15:58:25 +0100 |
From: Juha Riihimäki <address@hidden>
Add support for unmapping a SysBus device's mmio region, via a new
function sysbus_mmio_unmap(). This simply reverses the effect of
sysbus_mmio_map().
Signed-off-by: Juha Riihimäki <address@hidden>
Signed-off-by: Peter Maydell <address@hidden>
---
hw/sysbus.c | 17 +++++++++++++++++
hw/sysbus.h | 1 +
2 files changed, 18 insertions(+), 0 deletions(-)
diff --git a/hw/sysbus.c b/hw/sysbus.c
index 2e22be7..021c653 100644
--- a/hw/sysbus.c
+++ b/hw/sysbus.c
@@ -39,6 +39,23 @@ void sysbus_connect_irq(SysBusDevice *dev, int n, qemu_irq
irq)
}
}
+void sysbus_mmio_unmap(SysBusDevice *dev, int n)
+{
+ assert(n >= 0 && n < dev->num_mmio);
+
+ if (dev->mmio[n].addr == (target_phys_addr_t)-1) {
+ /* region already unmapped */
+ return;
+ }
+ if (dev->mmio[n].cb) {
+ dev->mmio[n].cb(dev, (target_phys_addr_t)-1);
+ } else {
+ cpu_register_physical_memory(dev->mmio[n].addr, dev->mmio[n].size,
+ IO_MEM_UNASSIGNED);
+ }
+ dev->mmio[n].addr = (target_phys_addr_t)-1;
+}
+
void sysbus_mmio_map(SysBusDevice *dev, int n, target_phys_addr_t addr)
{
assert(n >= 0 && n < dev->num_mmio);
diff --git a/hw/sysbus.h b/hw/sysbus.h
index 4e8cb16..4f93b70 100644
--- a/hw/sysbus.h
+++ b/hw/sysbus.h
@@ -53,6 +53,7 @@ void sysbus_init_ioports(SysBusDevice *dev, pio_addr_t
ioport, pio_addr_t size);
void sysbus_connect_irq(SysBusDevice *dev, int n, qemu_irq irq);
void sysbus_mmio_map(SysBusDevice *dev, int n, target_phys_addr_t addr);
+void sysbus_mmio_unmap(SysBusDevice *dev, int n);
/* Legacy helper function for creating devices. */
DeviceState *sysbus_create_varargs(const char *name,
--
1.7.1
- [Qemu-devel] [PATCH 00/12] bugfix and qdevify NAND and ONENAND devices, Peter Maydell, 2011/07/15
- [Qemu-devel] [PATCH 10/12] hw/onenand: program actions can only clear bits, Peter Maydell, 2011/07/15
- [Qemu-devel] [PATCH 06/12] hw/nand: qdevify, Peter Maydell, 2011/07/15
- [Qemu-devel] [PATCH 05/12] hw/nand: Writing to NAND can only clear bits, Peter Maydell, 2011/07/15
- [Qemu-devel] [PATCH 11/12] hw/sysbus: Add sysbus_mmio_unmap() for unmapping a region,
Peter Maydell <=
- [Qemu-devel] [PATCH 08/12] onenand: Handle various ID fields separately, Peter Maydell, 2011/07/15
- [Qemu-devel] [PATCH 12/12] hw/onenand: qdevify, Peter Maydell, 2011/07/15
- [Qemu-devel] [PATCH 02/12] hw/nand: Support large NAND devices, Peter Maydell, 2011/07/15
- [Qemu-devel] [PATCH 09/12] onenand: Ignore zero writes to boot command space, Peter Maydell, 2011/07/15
- [Qemu-devel] [PATCH 07/12] onenand: Pass BlockDriverState to init function, Peter Maydell, 2011/07/15
- [Qemu-devel] [PATCH 04/12] hw/nand: Support multiple reads following READ STATUS, Peter Maydell, 2011/07/15
- [Qemu-devel] [PATCH 03/12] hw/nand: Support devices wider than 8 bits, Peter Maydell, 2011/07/15
- [Qemu-devel] [PATCH 01/12] hw/nand: Pass block device state to init function, Peter Maydell, 2011/07/15
- Re: [Qemu-devel] [PATCH 00/12] bugfix and qdevify NAND and ONENAND devices, Peter Maydell, 2011/07/28