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[Qemu-devel] [PATCH 02/14] isa: Add isa_register_old_portio_list().
From: |
Richard Henderson |
Subject: |
[Qemu-devel] [PATCH 02/14] isa: Add isa_register_old_portio_list(). |
Date: |
Tue, 16 Aug 2011 09:45:33 -0700 |
Signed-off-by: Richard Henderson <address@hidden>
---
hw/isa-bus.c | 39 +++++++++++++++++++++++++++++++++++++++
hw/isa.h | 33 ++++++++++++++++++++++++++++++++-
2 files changed, 71 insertions(+), 1 deletions(-)
diff --git a/hw/isa-bus.c b/hw/isa-bus.c
index e9c1712..d8e1880 100644
--- a/hw/isa-bus.c
+++ b/hw/isa-bus.c
@@ -16,6 +16,7 @@
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, see <http://www.gnu.org/licenses/>.
*/
+#include <glib.h>
#include "hw.h"
#include "monitor.h"
#include "sysbus.h"
@@ -103,6 +104,44 @@ void isa_register_ioport(ISADevice *dev, MemoryRegion *io,
uint16_t start)
}
}
+void isa_register_old_portio_list(ISADevice *dev, uint16_t start,
+ const MemoryRegionPortio *pio_start,
+ void *opaque, const char *name)
+{
+ MemoryRegion *io_space = isabus->address_space_io;
+ const MemoryRegionPortio *pio_iter;
+
+ /* START is how we should treat DEV, regardless of the actual
+ contents of the portio array. This is how the old code
+ actually handled e.g. the FDC device. */
+ if (dev) {
+ isa_init_ioport(dev, start);
+ }
+
+ for (; pio_start->size != 0; pio_start = pio_iter + 1) {
+ unsigned int off_low = UINT_MAX, off_high = 0;
+ MemoryRegionOps *ops;
+ MemoryRegion *region;
+
+ for (pio_iter = pio_start; pio_iter->size; ++pio_iter) {
+ if (pio_iter->offset < off_low) {
+ off_low = pio_iter->offset;
+ }
+ if (pio_iter->offset + pio_iter->len > off_high) {
+ off_high = pio_iter->offset + pio_iter->len;
+ }
+ }
+
+ ops = g_new(MemoryRegionOps, 1);
+ ops->old_portio = pio_start;
+
+ region = g_new(MemoryRegion, 1);
+ memory_region_init_io(region, ops, opaque, name, off_high - off_low);
+ memory_region_set_offset(region, start + off_low);
+ memory_region_add_subregion(io_space, start + off_low, region);
+ }
+}
+
static int isa_qdev_init(DeviceState *qdev, DeviceInfo *base)
{
ISADevice *dev = DO_UPCAST(ISADevice, qdev, qdev);
diff --git a/hw/isa.h b/hw/isa.h
index c5c2618..117d8b0 100644
--- a/hw/isa.h
+++ b/hw/isa.h
@@ -28,7 +28,6 @@ ISABus *isa_bus_new(DeviceState *dev, MemoryRegion
*address_space_io);
void isa_bus_irqs(qemu_irq *irqs);
qemu_irq isa_get_irq(int isairq);
void isa_init_irq(ISADevice *dev, qemu_irq *p, int isairq);
-void isa_register_ioport(ISADevice *dev, MemoryRegion *io, uint16_t start);
void isa_init_ioport(ISADevice *dev, uint16_t ioport);
void isa_init_ioport_range(ISADevice *dev, uint16_t start, uint16_t length);
void isa_qdev_register(ISADeviceInfo *info);
@@ -37,6 +36,38 @@ ISADevice *isa_create(const char *name);
ISADevice *isa_try_create(const char *name);
ISADevice *isa_create_simple(const char *name);
+/**
+ * isa_register_ioport: Install an I/O port region on the ISA bus.
+ *
+ * Register an I/O port region via memory_region_add_subregion
+ * inside the ISA I/O address space.
+ *
+ * @dev: the ISADevice against which these are registered; may be NULL.
+ * @io: the #MemoryRegion being registered.
+ * @start: the base I/O port.
+ */
+void isa_register_ioport(ISADevice *dev, MemoryRegion *io, uint16_t start);
+
+/**
+ * isa_register_old_portio_list: Initialize a set of ISA io ports
+ *
+ * Several ISA devices have many dis-joint I/O ports. Worse, these I/O
+ * ports can be interleaved with I/O ports from other devices. This
+ * function makes it easy to create multiple MemoryRegions for a single
+ * device and use the legacy portio routines.
+ *
+ * @dev: the ISADevice against which these are registered; may be NULL.
+ * @start: the base I/O port against which the portio->offset is applied.
+ * @old_portio: A concatenation of several #MemoryRegionOps old_portio
+ * parameters. The entire list should be terminated by a double
+ * PORTIO_END_OF_LIST().
+ * @opaque: passed into the old_portio callbacks.
+ * @name: passed into memory_region_init_io.
+ */
+void isa_register_old_portio_list(ISADevice *dev, uint16_t start,
+ const MemoryRegionPortio *old_portio,
+ void *opaque, const char *name);
+
extern target_phys_addr_t isa_mem_base;
void isa_mmio_setup(MemoryRegion *mr, target_phys_addr_t size);
--
1.7.6
- [Qemu-devel] [PATCH 00/14] Convert ISA I/O ports to Memory API, Richard Henderson, 2011/08/16
- [Qemu-devel] [PATCH 01/14] isa: Tidy support code for isabus_get_fw_dev_path., Richard Henderson, 2011/08/16
- [Qemu-devel] [PATCH 02/14] isa: Add isa_register_old_portio_list().,
Richard Henderson <=
- Re: [Qemu-devel] [PATCH 02/14] isa: Add isa_register_old_portio_list()., Blue Swirl, 2011/08/17
- Re: [Qemu-devel] [PATCH 02/14] isa: Add isa_register_old_portio_list()., Avi Kivity, 2011/08/17
- Re: [Qemu-devel] [PATCH 02/14] isa: Add isa_register_old_portio_list()., Blue Swirl, 2011/08/17
- Re: [Qemu-devel] [PATCH 02/14] isa: Add isa_register_old_portio_list()., Avi Kivity, 2011/08/17
[Qemu-devel] [PATCH 04/14] gus: Convert to isa_register_old_portio_list., Richard Henderson, 2011/08/16