diff options
Diffstat (limited to 'bsps/powerpc/beatnik/vme/vme_dma.c')
| -rw-r--r-- | bsps/powerpc/beatnik/vme/vme_dma.c | 215 |
1 files changed, 215 insertions, 0 deletions
diff --git a/bsps/powerpc/beatnik/vme/vme_dma.c b/bsps/powerpc/beatnik/vme/vme_dma.c new file mode 100644 index 0000000000..29ba3e6bfe --- /dev/null +++ b/bsps/powerpc/beatnik/vme/vme_dma.c @@ -0,0 +1,215 @@ +/* Setup/glue to attach VME DMA driver to the beatnik BSP */ + +/* + * Authorship + * ---------- + * This software ('beatnik' RTEMS BSP for MVME6100 and MVME5500) was + * created by Till Straumann <strauman@slac.stanford.edu>, 2005-2007, + * Stanford Linear Accelerator Center, Stanford University. + * + * Acknowledgement of sponsorship + * ------------------------------ + * The 'beatnik' BSP was produced by + * the Stanford Linear Accelerator Center, Stanford University, + * under Contract DE-AC03-76SFO0515 with the Department of Energy. + * + * Government disclaimer of liability + * ---------------------------------- + * Neither the United States nor the United States Department of Energy, + * nor any of their employees, makes any warranty, express or implied, or + * assumes any legal liability or responsibility for the accuracy, + * completeness, or usefulness of any data, apparatus, product, or process + * disclosed, or represents that its use would not infringe privately owned + * rights. + * + * Stanford disclaimer of liability + * -------------------------------- + * Stanford University makes no representations or warranties, express or + * implied, nor assumes any liability for the use of this software. + * + * Stanford disclaimer of copyright + * -------------------------------- + * Stanford University, owner of the copyright, hereby disclaims its + * copyright and all other rights in this software. Hence, anyone may + * freely use it for any purpose without restriction. + * + * Maintenance of notices + * ---------------------- + * In the interest of clarity regarding the origin and status of this + * SLAC software, this and all the preceding Stanford University notices + * are to remain affixed to any copy or derivative of this software made + * or distributed by the recipient and are to be affixed to any copy of + * software made or distributed by the recipient that contains a copy or + * derivative of this software. + * + * ------------------ SLAC Software Notices, Set 4 OTT.002a, 2004 FEB 03 + */ + +#include <stdio.h> +#include <stdint.h> +#include <rtems.h> +#include <bsp.h> +#include <bsp/VME.h> +#include <bsp/vmeTsi148.h> +#include <bsp/vmeUniverse.h> +#include <bsp/VMEDMA.h> +#include <bsp/vmeTsi148DMA.h> +#include <bsp/vmeUniverseDMA.h> +#include <bsp/bspVmeDmaList.h> + +typedef struct DmaOpsRec_ { + int (*setup)(int, uint32_t, uint32_t, void *); + int (*start)(int, uint32_t, uint32_t, uint32_t); + uint32_t (*status)(int); + VMEDmaListClass listClass; +} DmaOpsRec, *DmaOps; + +static DmaOpsRec universeOps = { + vmeUniverseDmaSetup, + vmeUniverseDmaStart, + vmeUniverseDmaStatus, + &vmeUniverseDmaListClass, +}; + +static DmaOpsRec tsiOps = { + vmeTsi148DmaSetup, + vmeTsi148DmaStart, + vmeTsi148DmaStatus, + &vmeTsi148DmaListClass, +}; + +static int setup(int a, uint32_t b, uint32_t c, void *d); +static int start(int a, uint32_t b, uint32_t c, uint32_t d); +static uint32_t status(int a); + +static DmaOpsRec jumpstartOps = { + setup, + start, + status, + 0 +}; + +static DmaOps dmaOps = &jumpstartOps; + +static DmaOps selectOps() +{ + return (MVME6100 != BSP_getBoardType()) ? + &universeOps : &tsiOps; +} + +static int +setup(int a, uint32_t b, uint32_t c, void *d) +{ + return (dmaOps=selectOps())->setup(a,b,c,d); +} + +static int +start(int a, uint32_t b, uint32_t c, uint32_t d) +{ + return (dmaOps=selectOps())->start(a,b,c,d); +} + +static uint32_t +status(int a) +{ + return (dmaOps=selectOps())->status(a); +} + + +int +BSP_VMEDmaSetup(int channel, uint32_t bus_mode, uint32_t xfer_mode, void *custom_setup) +{ + return dmaOps->setup(channel, bus_mode, xfer_mode, custom_setup); +} + +int +BSP_VMEDmaStart(int channel, uint32_t pci_addr, uint32_t vme_addr, uint32_t n_bytes) +{ + return dmaOps->start(channel, pci_addr, vme_addr, n_bytes); +} + +uint32_t +BSP_VMEDmaStatus(int channel) +{ + return dmaOps->status(channel); +} + +BSP_VMEDmaListDescriptor +BSP_VMEDmaListDescriptorSetup( + BSP_VMEDmaListDescriptor d, + uint32_t attr_mask, + uint32_t xfer_mode, + uint32_t pci_addr, + uint32_t vme_addr, + uint32_t n_bytes) +{ +VMEDmaListClass pc; + if ( !d ) { + if ( ! (pc = dmaOps->listClass) ) { + pc = (dmaOps = selectOps())->listClass; + } + return BSP_VMEDmaListDescriptorNewTool( + pc, + attr_mask, + xfer_mode, + pci_addr, + vme_addr, + n_bytes); + + } + return BSP_VMEDmaListDescriptorSetupTool(d, attr_mask, xfer_mode, pci_addr, vme_addr, n_bytes); +} + +int +BSP_VMEDmaListStart(int channel, BSP_VMEDmaListDescriptor list) +{ + return BSP_VMEDmaListDescriptorStartTool(0, channel, list); +} + +/* NOT thread safe! */ +int +BSP_VMEDmaInstallISR(int channel, BSP_VMEDmaIRQCallback cb, void *usr_arg) +{ +int vec; +BSP_VME_ISR_t curr; +void *carg; + + if ( MVME6100 != BSP_getBoardType() ) { + if ( channel != 0 ) + return -1; + + vec = UNIV_DMA_INT_VEC; + + } else { + if ( channel < 0 || channel > 1 ) + return -1; + + vec = (channel ? TSI_DMA1_INT_VEC : TSI_DMA_INT_VEC ); + } + + curr = BSP_getVME_isr(vec, &carg); + + if ( cb && curr ) { + /* IRQ currently in use */ + return -1; + } + + if ( !cb && !curr ) { + /* Allow uninstall if no handler is currently installed; + * just make sure IRQ is disabled + */ + BSP_disableVME_int_lvl(vec); + return 0; + } + + if ( cb ) { + if ( BSP_installVME_isr(vec, (BSP_VME_ISR_t)cb, usr_arg) ) + return -4; + BSP_enableVME_int_lvl(vec); + } else { + BSP_disableVME_int_lvl(vec); + if ( BSP_removeVME_isr(vec, curr, carg) ) + return -4; + } + return 0; +} |