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qdev: Implement named GPIOs

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Implement named GPIOs on the Device layer. Listifies the existing GPIOs
stuff using string keys. Legacy un-named GPIOs are preserved by using
a NULL name string - they are just a single matchable element in the
name list.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
This commit is contained in:
Peter Crosthwaite 2014-05-19 23:30:58 -07:00 • committed by Andreas Färber
parent 6b1b144019
commit a5f54290ce
4 changed files with 120 additions and 24 deletions
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24
include/hw/qdev-core.h
View file

@ -131,6 +131,17 @@ typedef struct DeviceClass {
const char *bus_type;
} DeviceClass;
typedef struct NamedGPIOList NamedGPIOList;
struct NamedGPIOList {
char *name;
qemu_irq *in;
int num_in;
qemu_irq *out;
int num_out;
QLIST_ENTRY(NamedGPIOList) node;
};
/**
* DeviceState:
* @realized: Indicates whether the device has been fully constructed.
@ -148,10 +159,7 @@ struct DeviceState {
QemuOpts *opts;
int hotplugged;
BusState *parent_bus;
int num_gpio_out;
qemu_irq *gpio_out;
int num_gpio_in;
qemu_irq *gpio_in;
QLIST_HEAD(, NamedGPIOList) gpios;
QLIST_HEAD(, BusState) child_bus;
int num_child_bus;
int instance_id_alias;
@ -252,7 +260,11 @@ void qdev_machine_creation_done(void);
bool qdev_machine_modified(void);
qemu_irq qdev_get_gpio_in(DeviceState *dev, int n);
qemu_irq qdev_get_gpio_in_named(DeviceState *dev, const char *name, int n);
void qdev_connect_gpio_out(DeviceState *dev, int n, qemu_irq pin);
void qdev_connect_gpio_out_named(DeviceState *dev, const char *name, int n,
qemu_irq pin);
BusState *qdev_get_child_bus(DeviceState *dev, const char *name);
@ -262,6 +274,10 @@ BusState *qdev_get_child_bus(DeviceState *dev, const char *name);
/* GPIO inputs also double as IRQ sinks. */
void qdev_init_gpio_in(DeviceState *dev, qemu_irq_handler handler, int n);
void qdev_init_gpio_out(DeviceState *dev, qemu_irq *pins, int n);
void qdev_init_gpio_in_named(DeviceState *dev, qemu_irq_handler handler,
const char *name, int n);
void qdev_init_gpio_out_named(DeviceState *dev, qemu_irq *pins,
const char *name, int n);
BusState *qdev_get_parent_bus(DeviceState *dev);