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