From 925d65e6d8a4c84c54fbad060f32385b57e210ed Mon Sep 17 00:00:00 2001 From: Ivan Khoronzhuk Date: Mon, 22 Aug 2016 21:18:27 +0300 Subject: [PATCH] net: ethernet: ti: davinci_cpdma: move cpdma channel struct macroses to internals Keep the driver internals in C file. Currently it's not required for drivers to know rx or tx a channel is, except create function. So correct "channel create" function, and use all channel struct macroses only for internal use. Reviewed-by: Mugunthan V N Signed-off-by: Ivan Khoronzhuk Signed-off-by: David S. Miller --- drivers/net/ethernet/ti/cpsw.c | 7 ++----- drivers/net/ethernet/ti/davinci_cpdma.c | 13 +++++++++++-- drivers/net/ethernet/ti/davinci_cpdma.h | 9 +-------- drivers/net/ethernet/ti/davinci_emac.c | 8 ++++---- 4 files changed, 18 insertions(+), 19 deletions(-) diff --git a/drivers/net/ethernet/ti/cpsw.c b/drivers/net/ethernet/ti/cpsw.c index 28cc716f22c9..1fbb50f25603 100644 --- a/drivers/net/ethernet/ti/cpsw.c +++ b/drivers/net/ethernet/ti/cpsw.c @@ -2535,11 +2535,8 @@ static int cpsw_probe(struct platform_device *pdev) goto clean_runtime_disable_ret; } - cpsw->txch[0] = cpdma_chan_create(cpsw->dma, tx_chan_num(0), - cpsw_tx_handler); - cpsw->rxch[0] = cpdma_chan_create(cpsw->dma, rx_chan_num(0), - cpsw_rx_handler); - + cpsw->txch[0] = cpdma_chan_create(cpsw->dma, 0, cpsw_tx_handler, 0); + cpsw->rxch[0] = cpdma_chan_create(cpsw->dma, 0, cpsw_rx_handler, 1); if (WARN_ON(!cpsw->rxch[0] || !cpsw->txch[0])) { dev_err(priv->dev, "error initializing dma channels\n"); ret = -ENOMEM; diff --git a/drivers/net/ethernet/ti/davinci_cpdma.c b/drivers/net/ethernet/ti/davinci_cpdma.c index 4b578b17ec2d..c3f35f11a8fd 100644 --- a/drivers/net/ethernet/ti/davinci_cpdma.c +++ b/drivers/net/ethernet/ti/davinci_cpdma.c @@ -124,6 +124,13 @@ struct cpdma_chan { int int_set, int_clear, td; }; +#define tx_chan_num(chan) (chan) +#define rx_chan_num(chan) ((chan) + CPDMA_MAX_CHANNELS) +#define is_rx_chan(chan) ((chan)->chan_num >= CPDMA_MAX_CHANNELS) +#define is_tx_chan(chan) (!is_rx_chan(chan)) +#define __chan_linear(chan_num) ((chan_num) & (CPDMA_MAX_CHANNELS - 1)) +#define chan_linear(chan) __chan_linear((chan)->chan_num) + /* The following make access to common cpdma_ctlr params more readable */ #define dmaregs params.dmaregs #define num_chan params.num_chan @@ -441,12 +448,14 @@ static void cpdma_chan_split_pool(struct cpdma_ctlr *ctlr) } struct cpdma_chan *cpdma_chan_create(struct cpdma_ctlr *ctlr, int chan_num, - cpdma_handler_fn handler) + cpdma_handler_fn handler, int rx_type) { + int offset = chan_num * 4; struct cpdma_chan *chan; - int offset = (chan_num % CPDMA_MAX_CHANNELS) * 4; unsigned long flags; + chan_num = rx_type ? rx_chan_num(chan_num) : tx_chan_num(chan_num); + if (__chan_linear(chan_num) >= ctlr->num_chan) return NULL; diff --git a/drivers/net/ethernet/ti/davinci_cpdma.h b/drivers/net/ethernet/ti/davinci_cpdma.h index 070f1d0ea848..a07b22b12bc1 100644 --- a/drivers/net/ethernet/ti/davinci_cpdma.h +++ b/drivers/net/ethernet/ti/davinci_cpdma.h @@ -17,13 +17,6 @@ #define CPDMA_MAX_CHANNELS BITS_PER_LONG -#define tx_chan_num(chan) (chan) -#define rx_chan_num(chan) ((chan) + CPDMA_MAX_CHANNELS) -#define is_rx_chan(chan) ((chan)->chan_num >= CPDMA_MAX_CHANNELS) -#define is_tx_chan(chan) (!is_rx_chan(chan)) -#define __chan_linear(chan_num) ((chan_num) & (CPDMA_MAX_CHANNELS - 1)) -#define chan_linear(chan) __chan_linear((chan)->chan_num) - #define CPDMA_RX_SOURCE_PORT(__status__) ((__status__ >> 16) & 0x7) #define CPDMA_EOI_RX_THRESH 0x0 @@ -79,7 +72,7 @@ int cpdma_ctlr_start(struct cpdma_ctlr *ctlr); int cpdma_ctlr_stop(struct cpdma_ctlr *ctlr); struct cpdma_chan *cpdma_chan_create(struct cpdma_ctlr *ctlr, int chan_num, - cpdma_handler_fn handler); + cpdma_handler_fn handler, int rx_type); int cpdma_chan_get_rx_buf_num(struct cpdma_chan *chan); int cpdma_chan_destroy(struct cpdma_chan *chan); int cpdma_chan_start(struct cpdma_chan *chan); diff --git a/drivers/net/ethernet/ti/davinci_emac.c b/drivers/net/ethernet/ti/davinci_emac.c index 2d6fc9a0fb21..2fd94a5bc1f3 100644 --- a/drivers/net/ethernet/ti/davinci_emac.c +++ b/drivers/net/ethernet/ti/davinci_emac.c @@ -1870,10 +1870,10 @@ static int davinci_emac_probe(struct platform_device *pdev) goto no_pdata; } - priv->txchan = cpdma_chan_create(priv->dma, tx_chan_num(EMAC_DEF_TX_CH), - emac_tx_handler); - priv->rxchan = cpdma_chan_create(priv->dma, rx_chan_num(EMAC_DEF_RX_CH), - emac_rx_handler); + priv->txchan = cpdma_chan_create(priv->dma, EMAC_DEF_TX_CH, + emac_tx_handler, 0); + priv->rxchan = cpdma_chan_create(priv->dma, EMAC_DEF_RX_CH, + emac_rx_handler, 1); if (WARN_ON(!priv->txchan || !priv->rxchan)) { rc = -ENOMEM; goto no_cpdma_chan; -- 2.30.2