diff options
Diffstat (limited to 'hw/dma/xlnx_csu_dma.c')
| -rw-r--r-- | hw/dma/xlnx_csu_dma.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/hw/dma/xlnx_csu_dma.c b/hw/dma/xlnx_csu_dma.c index 531013f35a..bc1505aade 100644 --- a/hw/dma/xlnx_csu_dma.c +++ b/hw/dma/xlnx_csu_dma.c @@ -39,7 +39,7 @@ REG32(ADDR, 0x0) FIELD(ADDR, ADDR, 2, 30) /* wo */ REG32(SIZE, 0x4) - FIELD(SIZE, SIZE, 2, 27) /* wo */ + FIELD(SIZE, SIZE, 2, 27) FIELD(SIZE, LAST_WORD, 0, 1) /* rw, only exists in SRC */ REG32(STATUS, 0x8) FIELD(STATUS, DONE_CNT, 13, 3) /* wtc */ @@ -335,10 +335,14 @@ static uint64_t addr_pre_write(RegisterInfo *reg, uint64_t val) static uint64_t size_pre_write(RegisterInfo *reg, uint64_t val) { XlnxCSUDMA *s = XLNX_CSU_DMA(reg->opaque); + uint64_t size = val & R_SIZE_SIZE_MASK; if (s->regs[R_SIZE] != 0) { - qemu_log_mask(LOG_GUEST_ERROR, - "%s: Starting DMA while already running.\n", __func__); + if (size || s->is_dst) { + qemu_log_mask(LOG_GUEST_ERROR, + "%s: Starting DMA while already running.\n", + __func__); + } } if (!s->is_dst) { @@ -346,7 +350,7 @@ static uint64_t size_pre_write(RegisterInfo *reg, uint64_t val) } /* Size is word aligned */ - return val & R_SIZE_SIZE_MASK; + return size; } static uint64_t size_post_read(RegisterInfo *reg, uint64_t val) |