diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/soc/fsl/qe/qmc.c | 29 |
1 files changed, 25 insertions, 4 deletions
diff --git a/drivers/soc/fsl/qe/qmc.c b/drivers/soc/fsl/qe/qmc.c index 2312152a44b3..4b4832d93c9b 100644 --- a/drivers/soc/fsl/qe/qmc.c +++ b/drivers/soc/fsl/qe/qmc.c @@ -166,7 +166,7 @@ struct qmc_xfer_desc { union { void (*tx_complete)(void *context); - void (*rx_complete)(void *context, size_t length); + void (*rx_complete)(void *context, size_t length, unsigned int flags); }; void *context; }; @@ -421,7 +421,8 @@ end: } int qmc_chan_read_submit(struct qmc_chan *chan, dma_addr_t addr, size_t length, - void (*complete)(void *context, size_t length), void *context) + void (*complete)(void *context, size_t length, unsigned int flags), + void *context) { struct qmc_xfer_desc *xfer_desc; unsigned long flags; @@ -454,6 +455,10 @@ int qmc_chan_read_submit(struct qmc_chan *chan, dma_addr_t addr, size_t length, xfer_desc->rx_complete = complete; xfer_desc->context = context; + /* Clear previous status flags */ + ctrl &= ~(QMC_BD_RX_L | QMC_BD_RX_F | QMC_BD_RX_LG | QMC_BD_RX_NO | + QMC_BD_RX_AB | QMC_BD_RX_CR); + /* Activate the descriptor */ ctrl |= (QMC_BD_RX_E | QMC_BD_RX_UB); wmb(); /* Be sure to flush data before descriptor activation */ @@ -485,7 +490,7 @@ EXPORT_SYMBOL(qmc_chan_read_submit); static void qmc_chan_read_done(struct qmc_chan *chan) { - void (*complete)(void *context, size_t size); + void (*complete)(void *context, size_t size, unsigned int flags); struct qmc_xfer_desc *xfer_desc; unsigned long flags; cbd_t __iomem *bd; @@ -527,7 +532,23 @@ static void qmc_chan_read_done(struct qmc_chan *chan) if (complete) { spin_unlock_irqrestore(&chan->rx_lock, flags); - complete(context, datalen); + + /* + * Avoid conversion between internal hardware flags and + * the software API flags. + * -> Be sure that the software API flags are consistent + * with the hardware flags + */ + BUILD_BUG_ON(QMC_RX_FLAG_HDLC_LAST != QMC_BD_RX_L); + BUILD_BUG_ON(QMC_RX_FLAG_HDLC_FIRST != QMC_BD_RX_F); + BUILD_BUG_ON(QMC_RX_FLAG_HDLC_OVF != QMC_BD_RX_LG); + BUILD_BUG_ON(QMC_RX_FLAG_HDLC_UNA != QMC_BD_RX_NO); + BUILD_BUG_ON(QMC_RX_FLAG_HDLC_ABORT != QMC_BD_RX_AB); + BUILD_BUG_ON(QMC_RX_FLAG_HDLC_CRC != QMC_BD_RX_CR); + + complete(context, datalen, + ctrl & (QMC_BD_RX_L | QMC_BD_RX_F | QMC_BD_RX_LG | + QMC_BD_RX_NO | QMC_BD_RX_AB | QMC_BD_RX_CR)); spin_lock_irqsave(&chan->rx_lock, flags); } |