diff options
| author | Daniel Hellstrom <daniel@gaisler.com> | 2016-03-30 14:29:52 +0200 |
|---|---|---|
| committer | Daniel Hellstrom <daniel@gaisler.com> | 2017-03-06 07:54:55 +0100 |
| commit | 77856f67aa2aab5438ce7809ee0963aad576b276 (patch) | |
| tree | 90fe225ae935ec9009be420020a7507360a1d8d4 /c/src/lib/libbsp/sparc/shared/include/grspw_pkt.h | |
| parent | leon, grspw_pkt: support for reading tx/rx DMA queue (diff) | |
| download | rtems-77856f67aa2aab5438ce7809ee0963aad576b276.tar.bz2 | |
leon, grspw_pkt: allow user controlled DMA intr
The user has already the power to control which DMA buffer
will generate interrupt, but no clean way to enable RX/TX
interrupts on DMA channel. Without this patch the user had
to init DMA config rx/tx_irq_en_cnt to a very large value.
Diffstat (limited to 'c/src/lib/libbsp/sparc/shared/include/grspw_pkt.h')
| -rw-r--r-- | c/src/lib/libbsp/sparc/shared/include/grspw_pkt.h | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/c/src/lib/libbsp/sparc/shared/include/grspw_pkt.h b/c/src/lib/libbsp/sparc/shared/include/grspw_pkt.h index 1bab68be79..995d8bd7ce 100644 --- a/c/src/lib/libbsp/sparc/shared/include/grspw_pkt.h +++ b/c/src/lib/libbsp/sparc/shared/include/grspw_pkt.h @@ -261,9 +261,19 @@ struct grspw_core_stats { #define DMAFLAG_STRIP_PID 0x0008 /* See HW doc DMA-CTRL SP bit */ #define DMAFLAG_RESV2 0x0010 /* HAS NO EFFECT */ #define DMAFLAG_MASK (DMAFLAG_NO_SPILL|DMAFLAG_STRIP_ADR|DMAFLAG_STRIP_PID) +/* grspw_dma_config.flags misc options (not shifted internally) */ +#define DMAFLAG2_TXIE 0x00100000 /* See HW doc DMA-CTRL TI bit. + * Used to enable TX DMA interrupt + * when tx_irq_en_cnt=0. + */ +#define DMAFLAG2_RXIE 0x00200000 /* See HW doc DMA-CTRL RI bit. + * Used to enable RX DMA interrupt + * when rx_irq_en_cnt=0. + */ +#define DMAFLAG2_MASK (DMAFLAG2_TXIE | DMAFLAG2_RXIE) struct grspw_dma_config { - int flags; /* DMA config flags, see DMAFLAG_* options */ + int flags; /* DMA config flags, see DMAFLAG1&2_* options */ int rxmaxlen; /* RX Max Packet Length */ int rx_irq_en_cnt; /* Enable RX IRQ every cnt descriptors */ int tx_irq_en_cnt; /* Enable TX IRQ every cnt descriptors */ |