diff options
Diffstat (limited to 'include/powerpc/mvme5500/bsp/VMEConfig.h')
| -rw-r--r-- | include/powerpc/mvme5500/bsp/VMEConfig.h | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/include/powerpc/mvme5500/bsp/VMEConfig.h b/include/powerpc/mvme5500/bsp/VMEConfig.h new file mode 100644 index 0000000000..ecc5789899 --- /dev/null +++ b/include/powerpc/mvme5500/bsp/VMEConfig.h @@ -0,0 +1,67 @@ +#ifndef RTEMS_BSP_VME_CONFIG_H +#define RTEMS_BSP_VME_CONFIG_H +/* VMEConfig.h, S. Kate Feng modified it for MVME5500 3/04 + * + * May 2011 : Use the VME shared IRQ handlers. + * + * It seems that the implementation of VMEUNIVERSE_IRQ_MGR_FLAG_PW_WORKAROUND + * is not fully developed. The UNIV_REGOFF_VCSR_BS is defined for VME64 + * specification, which does not apply to a VME32 crate. In order to avoid + * spurious VME interrupts, a better and more universal solution is + * to flush the vmeUniverse FIFO by reading a register back within the + * users' Interrupt Service Routine (ISR) before returning. + * + * Some devices might require the ISR to issue an interrupt status READ + * after its IRQ is cleared, but before its corresponding interrupt + * is enabled again. + * + */ + +/* + * Prototypes + */ +int BSP_VMEInit(void); +int BSP_VMEIrqMgrInstall(void); + +/* BSP specific address space configuration parameters */ + +/* + * The BSP maps VME address ranges into + * one BAT. + * NOTE: the BSP (startup/bspstart.c) uses + * hardcoded window lengths that match this + * layout: + */ +#define _VME_A32_WIN0_ON_PCI 0x90000000 +/* If _VME_CSR_ON_PCI is defined then the A32 window is reduced to accommodate + * CSR for space. + */ +#define _VME_CSR_ON_PCI 0x9e000000 +#define _VME_A24_ON_PCI 0x9f000000 +#define _VME_A16_ON_PCI 0x9fff0000 + +/* Reuse BAT 0 for VME */ +#define BSP_VME_BAT_IDX 0 + +/* start of the A32 window on the VME bus + * TODO: this should perhaps be a configuration option + */ +#define _VME_A32_WIN0_ON_VME 0x20000000 + +/* if _VME_DRAM_OFFSET is defined, the BSP + * will map our RAM onto the VME bus, starting + * at _VME_DRAM_OFFSET + */ +#define _VME_DRAM_OFFSET 0x90000000 + +#define BSP_VME_UNIVERSE_INSTALL_IRQ_MGR(err) \ + do { \ + err = vmeUniverseInstallIrqMgrAlt(VMEUNIVERSE_IRQ_MGR_FLAG_SHARED,\ + 0, BSP_GPP_VME_VLINT0, \ + 1, BSP_GPP_VME_VLINT1, \ + 2, BSP_GPP_VME_VLINT2, \ + 3, BSP_GPP_VME_VLINT3, \ + -1 /* terminate list */); \ + } while (0) + +#endif |