[b95aedf] | 1 | /* $Id$ */ |
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| 2 | |
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| 3 | /* Standard VME bridge configuration for VGM type boards */ |
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| 4 | |
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| 5 | /* Author: Till Straumann <strauman@slac.stanford.edu>, 3/2002 */ |
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| 6 | |
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| 7 | #include <bsp.h> |
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| 8 | #include <bsp/VME.h> |
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| 9 | #include <bsp/irq.h> |
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| 10 | #include <libcpu/bat.h> |
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| 11 | #include <libcpu/spr.h> |
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| 12 | #include <bsp/motorola.h> |
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| 13 | |
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| 14 | /* Use a weak alias for the VME configuration. |
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| 15 | * This permits individual applications to override |
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| 16 | * this routine. |
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| 17 | * They may even create an 'empty' |
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| 18 | * |
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| 19 | * void BSP_vme_config(void) {} |
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| 20 | * |
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| 21 | * which will avoid linking in the Universe driver |
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| 22 | * at all :-). |
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| 23 | */ |
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| 24 | |
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| 25 | void BSP_vme_config(void) __attribute__ (( weak, alias("__BSP_default_vme_config") )); |
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| 26 | |
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| 27 | SPR_RO(DBAT0U) |
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| 28 | |
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| 29 | void |
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| 30 | __BSP_default_vme_config(void) |
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| 31 | { |
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| 32 | union { |
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| 33 | struct _BATU bat; |
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| 34 | unsigned long batbits; |
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| 35 | } dbat0u; |
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| 36 | |
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| 37 | if (currentBoard < MVME_2300 || currentBoard >= MVME_1600) { |
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| 38 | printk("VME bridge for this board is unknown - if it's a Tundra Universe, add the board to 'shared/vme/vmeconfig.c'\n"); |
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| 39 | printk("Skipping VME initialization...\n"); |
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| 40 | return; |
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| 41 | } |
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| 42 | |
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| 43 | vmeUniverseInit(); |
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| 44 | vmeUniverseReset(); |
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| 45 | |
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| 46 | /* setup a PCI area to map the VME bus */ |
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| 47 | |
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| 48 | dbat0u.batbits = _read_DBAT0U(); |
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| 49 | |
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| 50 | /* if we have page tables, BAT0 is available */ |
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| 51 | if (dbat0u.bat.vs || dbat0u.bat.vp) { |
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| 52 | printk("WARNING: BAT0 is taken (no pagetables?); VME bridge must share PCI range for VME access\n"); |
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| 53 | printk("Skipping VME initialization...\n"); |
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| 54 | return; |
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| 55 | } |
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| 56 | |
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| 57 | setdbat(0, |
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| 58 | PCI_MEM_BASE + _VME_A32_WIN0_ON_PCI, |
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| 59 | PCI_MEM_BASE + _VME_A32_WIN0_ON_PCI, |
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| 60 | 0x10000000, |
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| 61 | IO_PAGE); |
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| 62 | |
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| 63 | /* map VME address ranges */ |
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| 64 | vmeUniverseMasterPortCfg( |
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| 65 | 0, |
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| 66 | VME_AM_EXT_SUP_DATA, |
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| 67 | _VME_A32_WIN0_ON_VME, |
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| 68 | _VME_A32_WIN0_ON_PCI, |
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| 69 | 0x0F000000); |
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| 70 | vmeUniverseMasterPortCfg( |
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| 71 | 1, |
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| 72 | VME_AM_STD_SUP_DATA, |
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| 73 | 0x00000000, |
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| 74 | _VME_A24_ON_PCI, |
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| 75 | 0x00ff0000); |
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| 76 | vmeUniverseMasterPortCfg( |
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| 77 | 2, |
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| 78 | VME_AM_SUP_SHORT_IO, |
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| 79 | 0x00000000, |
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| 80 | _VME_A16_ON_PCI, |
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| 81 | 0x00010000); |
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| 82 | |
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| 83 | #ifdef _VME_DRAM_OFFSET |
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| 84 | /* map our memory to VME */ |
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| 85 | vmeUniverseSlavePortCfg( |
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| 86 | 0, |
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| 87 | VME_AM_EXT_SUP_DATA, |
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| 88 | _VME_DRAM_OFFSET, |
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| 89 | PCI_DRAM_OFFSET, |
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| 90 | BSP_mem_size); |
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| 91 | |
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| 92 | /* make sure the host bridge PCI master is enabled */ |
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| 93 | vmeUniverseWriteReg( |
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| 94 | vmeUniverseReadReg(UNIV_REGOFF_PCI_CSR) | UNIV_PCI_CSR_BM, |
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| 95 | UNIV_REGOFF_PCI_CSR); |
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| 96 | #endif |
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| 97 | |
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| 98 | /* stdio is not yet initialized; the driver will revert to printk */ |
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| 99 | vmeUniverseMasterPortsShow(0); |
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| 100 | vmeUniverseSlavePortsShow(0); |
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| 101 | |
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| 102 | /* install the VME insterrupt manager */ |
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| 103 | vmeUniverseInstallIrqMgr(0,5,1,6); |
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| 104 | if (vmeUniverse0PciIrqLine<0) |
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| 105 | BSP_panic("Unable to get interrupt line info from PCI config"); |
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| 106 | _BSP_vme_bridge_irq=BSP_PCI_IRQ_LOWEST_OFFSET+vmeUniverse0PciIrqLine; |
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| 107 | } |
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