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Diffstat (limited to 'include/drvmgr/leon2_amba_bus.h')
-rw-r--r-- | include/drvmgr/leon2_amba_bus.h | 95 |
1 files changed, 95 insertions, 0 deletions
diff --git a/include/drvmgr/leon2_amba_bus.h b/include/drvmgr/leon2_amba_bus.h new file mode 100644 index 0000000000..ebb3a08486 --- /dev/null +++ b/include/drvmgr/leon2_amba_bus.h @@ -0,0 +1,95 @@ +/* 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 |