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/* LEON2 Hardcoded bus driver interface.
*
* COPYRIGHT (c) 2008.
* Cobham Gaisler AB.
*
* Bus driver for a hardcoded setup. LEON2 systems have some
* cores always present, here called "Standard Cores". In
* addtion to the standard cores there are often extra cores
* that can be defined using the "Custom Cores" mechanism.
*
* A Core is described by assigning a base register and
* IRQ0..IRQ15 using the leon2_core structure.
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.org/license/LICENSE.
*/
#ifndef __LEON2_AMBA_BUS_H__
#define __LEON2_AMBA_BUS_H__
/*** Cores location and IRQs hardcoded ***/
#include <drvmgr/drvmgr.h>
#include <ambapp.h>
#ifdef __cplusplus
extern "C" {
#endif
/* LEON2 AMBA Driver ID generation */
#define DRIVER_LEON2_AMBA(id) DRIVER_ID(DRVMGR_BUS_TYPE_LEON2_AMBA, id)
/* LEON2 Cores (any unique 48-bit number will do) */
#define LEON2_AMBA_NONE_ID 0
#define LEON2_AMBA_TIMER_ID 1
#define LEON2_AMBA_UART_ID 2
#define LEON2_AMBA_GPIO_ID 3
#define LEON2_AMBA_IRQCTRL_ID 4
#define LEON2_AMBA_AT697PCI_ID 100
#define LEON2_AMBA_AMBAPP_ID 0xfff0
/* LEON2 driver IDs */
#define DRIVER_LEON2_AMBA_TIMER DRIVER_LEON2_AMBA(LEON2_AMBA_TIMER_ID)
#define DRIVER_LEON2_AMBA_UART DRIVER_LEON2_AMBA(LEON2_AMBA_UART_ID)
#define DRIVER_LEON2_AMBA_AT697PCI DRIVER_LEON2_AMBA(LEON2_AMBA_AT697PCI_ID)
#define DRIVER_LEON2_AMBA_AMBAPP DRIVER_LEON2_AMBA(LEON2_AMBA_AMBAPP_ID)
struct leon2_amba_dev_id {
unsigned short core_id;
};
#define EMPTY_LEON2_CORE {{LEON2_AMBA_NONE_ID}, NULL, NULL}
struct leon2_core {
struct leon2_amba_dev_id id; /* Core ID */
char *name; /* Name of Core */
struct drvmgr_key *keys; /* Core setup (location, IRQs) */
};
struct leon2_bus {
struct leon2_core *std_cores; /* The LEON2 standard cores */
struct leon2_core *custom_cores; /* Custom cores on the same bus */
struct drvmgr_map_entry *maps_up; /* Memory map ip-stream */
struct drvmgr_map_entry *maps_down; /* Memory map down-stream */
};
extern struct leon2_core leon2_std_cores[];
/* Data structure drivers can access */
struct leon2_amba_dev_info {
unsigned short core_id; /* Core ID */
unsigned int reg_base; /* Register base */
char irqs[16]; /* 16 irqs */
};
struct leon2_amba_drv_info {
struct drvmgr_drv general; /* General bus info */
/* AMBA specific bus information */
struct leon2_amba_dev_id *ids; /* Supported hardware */
};
/* Initialize LEON2 bus with a configuration
* bus_config - What cores, their location and irqs
* resources - Driver configuration for the cores specified bus_config
*/
int leon2_root_register(
struct leon2_bus *bus_config,
struct drvmgr_bus_res *resources);
#ifdef __cplusplus
}
#endif
#endif
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