1 | /* LEON2 Hardcoded bus driver interface. |
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2 | * |
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3 | * COPYRIGHT (c) 2008. |
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4 | * Cobham Gaisler AB. |
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5 | * |
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6 | * Bus driver for a hardcoded setup. LEON2 systems have some |
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7 | * cores always present, here called "Standard Cores". In |
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8 | * addtion to the standard cores there are often extra cores |
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9 | * that can be defined using the "Custom Cores" mechanism. |
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10 | * |
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11 | * A Core is described by assigning a base register and |
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12 | * IRQ0..IRQ15 using the leon2_core structure. |
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13 | * |
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14 | * The license and distribution terms for this file may be |
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15 | * found in the file LICENSE in this distribution or at |
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16 | * http://www.rtems.org/license/LICENSE. |
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17 | */ |
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18 | |
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19 | #ifndef __LEON2_AMBA_BUS_H__ |
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20 | #define __LEON2_AMBA_BUS_H__ |
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21 | |
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22 | /*** Cores location and IRQs hardcoded ***/ |
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23 | |
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24 | #include <drvmgr/drvmgr.h> |
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25 | #include <ambapp.h> |
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26 | |
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27 | #ifdef __cplusplus |
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28 | extern "C" { |
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29 | #endif |
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30 | |
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31 | /* LEON2 AMBA Driver ID generation */ |
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32 | #define DRIVER_LEON2_AMBA(id) DRIVER_ID(DRVMGR_BUS_TYPE_LEON2_AMBA, id) |
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33 | |
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34 | /* LEON2 Cores (any unique 48-bit number will do) */ |
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35 | #define LEON2_AMBA_NONE_ID 0 |
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36 | #define LEON2_AMBA_TIMER_ID 1 |
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37 | #define LEON2_AMBA_UART_ID 2 |
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38 | #define LEON2_AMBA_GPIO_ID 3 |
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39 | #define LEON2_AMBA_IRQCTRL_ID 4 |
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40 | |
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41 | #define LEON2_AMBA_AT697PCI_ID 100 |
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42 | #define LEON2_AMBA_AMBAPP_ID 0xfff0 |
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43 | |
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44 | /* LEON2 driver IDs */ |
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45 | #define DRIVER_LEON2_AMBA_TIMER DRIVER_LEON2_AMBA(LEON2_AMBA_TIMER_ID) |
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46 | #define DRIVER_LEON2_AMBA_UART DRIVER_LEON2_AMBA(LEON2_AMBA_UART_ID) |
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47 | #define DRIVER_LEON2_AMBA_AT697PCI DRIVER_LEON2_AMBA(LEON2_AMBA_AT697PCI_ID) |
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48 | #define DRIVER_LEON2_AMBA_AMBAPP DRIVER_LEON2_AMBA(LEON2_AMBA_AMBAPP_ID) |
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49 | |
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50 | struct leon2_amba_dev_id { |
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51 | unsigned short core_id; |
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52 | }; |
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53 | |
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54 | #define EMPTY_LEON2_CORE {{LEON2_AMBA_NONE_ID}, NULL, NULL} |
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55 | struct leon2_core { |
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56 | struct leon2_amba_dev_id id; /* Core ID */ |
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57 | char *name; /* Name of Core */ |
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58 | struct drvmgr_key *keys; /* Core setup (location, IRQs) */ |
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59 | }; |
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60 | |
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61 | struct leon2_bus { |
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62 | struct leon2_core *std_cores; /* The LEON2 standard cores */ |
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63 | struct leon2_core *custom_cores; /* Custom cores on the same bus */ |
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64 | struct drvmgr_map_entry *maps_up; /* Memory map ip-stream */ |
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65 | struct drvmgr_map_entry *maps_down; /* Memory map down-stream */ |
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66 | }; |
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67 | |
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68 | extern struct leon2_core leon2_std_cores[]; |
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69 | |
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70 | /* Data structure drivers can access */ |
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71 | struct leon2_amba_dev_info { |
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72 | unsigned short core_id; /* Core ID */ |
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73 | unsigned int reg_base; /* Register base */ |
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74 | char irqs[16]; /* 16 irqs */ |
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75 | }; |
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76 | |
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77 | struct leon2_amba_drv_info { |
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78 | struct drvmgr_drv general; /* General bus info */ |
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79 | /* AMBA specific bus information */ |
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80 | struct leon2_amba_dev_id *ids; /* Supported hardware */ |
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81 | }; |
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82 | |
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83 | /* Initialize LEON2 bus with a configuration |
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84 | * bus_config - What cores, their location and irqs |
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85 | * resources - Driver configuration for the cores specified bus_config |
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86 | */ |
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87 | int leon2_root_register( |
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88 | struct leon2_bus *bus_config, |
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89 | struct drvmgr_bus_res *resources); |
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90 | |
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91 | #ifdef __cplusplus |
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92 | } |
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93 | #endif |
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94 | |
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95 | #endif |
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