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Message-ID: <20130516051701.GG27639@intel.com>
Date: Thu, 16 May 2013 10:47:01 +0530
From: Vinod Koul <vinod.koul@...el.com>
To: Lee Jones <lee.jones@...aro.org>
Cc: linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
balbi@...com, linux-usb@...r.kernel.org,
linux-crypto@...r.kernel.org, davem@...emloft.net,
herbert@...dor.hengli.com.au, arnd@...db.de,
linus.walleij@...ricsson.com, srinidhi.kasagar@...ricsson.com,
Dan Williams <djbw@...com>,
Per Forlin <per.forlin@...ricsson.com>,
Rabin Vincent <rabin@....in>
Subject: Re: [PATCH 31/39] dmaengine: ste_dma40: Replace ST-E's home-brew
DMA direction defs with generic ones
On Wed, May 15, 2013 at 10:51:54AM +0100, Lee Jones wrote:
> STEDMA40_*_TO_* direction definitions are identical in all but name to
> the pre-defined generic DMA_*_TO_* ones. Let's make things easy by not
> duplicating such things.
>
> Cc: Vinod Koul <vinod.koul@...el.com>
> Cc: Dan Williams <djbw@...com>
> Cc: Per Forlin <per.forlin@...ricsson.com>
> Cc: Rabin Vincent <rabin@....in>
> Signed-off-by: Lee Jones <lee.jones@...aro.org>
Nice :)
1) I dont see the STE macro getting removed, why do we need it
2) last i checked the direction values had a bit idfference b/w what you are
using and what dmaengine defines, so hopefully that is taken care of..
--
~Vinod
> ---
> drivers/dma/ste_dma40.c | 56 ++++++++++++++++++++++----------------------
> drivers/dma/ste_dma40_ll.c | 24 +++++++++----------
> 2 files changed, 40 insertions(+), 40 deletions(-)
>
> diff --git a/drivers/dma/ste_dma40.c b/drivers/dma/ste_dma40.c
> index 08bc58a..483da16 100644
> --- a/drivers/dma/ste_dma40.c
> +++ b/drivers/dma/ste_dma40.c
> @@ -78,7 +78,7 @@ static int dma40_memcpy_channels[] = {
> /* Default configuration for physcial memcpy */
> struct stedma40_chan_cfg dma40_memcpy_conf_phy = {
> .mode = STEDMA40_MODE_PHYSICAL,
> - .dir = STEDMA40_MEM_TO_MEM,
> + .dir = DMA_MEM_TO_MEM,
>
> .src_info.data_width = STEDMA40_BYTE_WIDTH,
> .src_info.psize = STEDMA40_PSIZE_PHY_1,
> @@ -92,7 +92,7 @@ struct stedma40_chan_cfg dma40_memcpy_conf_phy = {
> /* Default configuration for logical memcpy */
> struct stedma40_chan_cfg dma40_memcpy_conf_log = {
> .mode = STEDMA40_MODE_LOGICAL,
> - .dir = STEDMA40_MEM_TO_MEM,
> + .dir = DMA_MEM_TO_MEM,
>
> .src_info.data_width = STEDMA40_BYTE_WIDTH,
> .src_info.psize = STEDMA40_PSIZE_LOG_1,
> @@ -843,7 +843,7 @@ static void d40_log_lli_to_lcxa(struct d40_chan *chan, struct d40_desc *desc)
> * that uses linked lists.
> */
> if (!(chan->phy_chan->use_soft_lli &&
> - chan->dma_cfg.dir == STEDMA40_PERIPH_TO_MEM))
> + chan->dma_cfg.dir == DMA_DEV_TO_MEM))
> curr_lcla = d40_lcla_alloc_one(chan, desc);
>
> first_lcla = curr_lcla;
> @@ -1311,12 +1311,12 @@ static void d40_config_set_event(struct d40_chan *d40c,
> u32 event = D40_TYPE_TO_EVENT(d40c->dma_cfg.dev_type);
>
> /* Enable event line connected to device (or memcpy) */
> - if ((d40c->dma_cfg.dir == STEDMA40_PERIPH_TO_MEM) ||
> - (d40c->dma_cfg.dir == STEDMA40_PERIPH_TO_PERIPH))
> + if ((d40c->dma_cfg.dir == DMA_DEV_TO_MEM) ||
> + (d40c->dma_cfg.dir == DMA_DEV_TO_DEV))
> __d40_config_set_event(d40c, event_type, event,
> D40_CHAN_REG_SSLNK);
>
> - if (d40c->dma_cfg.dir != STEDMA40_PERIPH_TO_MEM)
> + if (d40c->dma_cfg.dir != DMA_DEV_TO_MEM)
> __d40_config_set_event(d40c, event_type, event,
> D40_CHAN_REG_SDLNK);
> }
> @@ -1774,7 +1774,7 @@ static int d40_validate_conf(struct d40_chan *d40c,
> res = -EINVAL;
> }
>
> - if (conf->dir == STEDMA40_PERIPH_TO_PERIPH) {
> + if (conf->dir == DMA_DEV_TO_DEV) {
> /*
> * DMAC HW supports it. Will be added to this driver,
> * in case any dma client requires it.
> @@ -1905,11 +1905,11 @@ static int d40_allocate_channel(struct d40_chan *d40c, bool *first_phy_user)
> phys = d40c->base->phy_res;
> num_phy_chans = d40c->base->num_phy_chans;
>
> - if (d40c->dma_cfg.dir == STEDMA40_PERIPH_TO_MEM) {
> + if (d40c->dma_cfg.dir == DMA_DEV_TO_MEM) {
> log_num = 2 * dev_type;
> is_src = true;
> - } else if (d40c->dma_cfg.dir == STEDMA40_MEM_TO_PERIPH ||
> - d40c->dma_cfg.dir == STEDMA40_MEM_TO_MEM) {
> + } else if (d40c->dma_cfg.dir == DMA_MEM_TO_DEV ||
> + d40c->dma_cfg.dir == DMA_MEM_TO_MEM) {
> /* dst event lines are used for logical memcpy */
> log_num = 2 * dev_type + 1;
> is_src = false;
> @@ -1920,7 +1920,7 @@ static int d40_allocate_channel(struct d40_chan *d40c, bool *first_phy_user)
> event_line = D40_TYPE_TO_EVENT(dev_type);
>
> if (!is_log) {
> - if (d40c->dma_cfg.dir == STEDMA40_MEM_TO_MEM) {
> + if (d40c->dma_cfg.dir == DMA_MEM_TO_MEM) {
> /* Find physical half channel */
> if (d40c->dma_cfg.use_fixed_channel) {
> i = d40c->dma_cfg.phy_channel;
> @@ -2068,10 +2068,10 @@ static int d40_free_dma(struct d40_chan *d40c)
> return -EINVAL;
> }
>
> - if (d40c->dma_cfg.dir == STEDMA40_MEM_TO_PERIPH ||
> - d40c->dma_cfg.dir == STEDMA40_MEM_TO_MEM)
> + if (d40c->dma_cfg.dir == DMA_MEM_TO_DEV ||
> + d40c->dma_cfg.dir == DMA_MEM_TO_MEM)
> is_src = false;
> - else if (d40c->dma_cfg.dir == STEDMA40_PERIPH_TO_MEM)
> + else if (d40c->dma_cfg.dir == DMA_DEV_TO_MEM)
> is_src = true;
> else {
> chan_err(d40c, "Unknown direction\n");
> @@ -2133,10 +2133,10 @@ static bool d40_is_paused(struct d40_chan *d40c)
> goto _exit;
> }
>
> - if (d40c->dma_cfg.dir == STEDMA40_MEM_TO_PERIPH ||
> - d40c->dma_cfg.dir == STEDMA40_MEM_TO_MEM) {
> + if (d40c->dma_cfg.dir == DMA_MEM_TO_DEV ||
> + d40c->dma_cfg.dir == DMA_MEM_TO_MEM) {
> status = readl(chanbase + D40_CHAN_REG_SDLNK);
> - } else if (d40c->dma_cfg.dir == STEDMA40_PERIPH_TO_MEM) {
> + } else if (d40c->dma_cfg.dir == DMA_DEV_TO_MEM) {
> status = readl(chanbase + D40_CHAN_REG_SSLNK);
> } else {
> chan_err(d40c, "Unknown direction\n");
> @@ -2387,12 +2387,12 @@ static void d40_set_prio_realtime(struct d40_chan *d40c)
> if (d40c->base->rev < 3)
> return;
>
> - if ((d40c->dma_cfg.dir == STEDMA40_PERIPH_TO_MEM) ||
> - (d40c->dma_cfg.dir == STEDMA40_PERIPH_TO_PERIPH))
> + if ((d40c->dma_cfg.dir == DMA_DEV_TO_MEM) ||
> + (d40c->dma_cfg.dir == DMA_DEV_TO_DEV))
> __d40_set_prio_rt(d40c, d40c->dma_cfg.dev_type, true);
>
> - if ((d40c->dma_cfg.dir == STEDMA40_MEM_TO_PERIPH) ||
> - (d40c->dma_cfg.dir == STEDMA40_PERIPH_TO_PERIPH))
> + if ((d40c->dma_cfg.dir == DMA_MEM_TO_DEV) ||
> + (d40c->dma_cfg.dir == DMA_DEV_TO_DEV))
> __d40_set_prio_rt(d40c, d40c->dma_cfg.dev_type, false);
> }
>
> @@ -2423,11 +2423,11 @@ static struct dma_chan *d40_xlate(struct of_phandle_args *dma_spec,
>
> switch (D40_DT_FLAGS_DIR(flags)) {
> case 0:
> - cfg.dir = STEDMA40_MEM_TO_PERIPH;
> + cfg.dir = DMA_MEM_TO_DEV;
> cfg.dst_info.big_endian = D40_DT_FLAGS_BIG_ENDIAN(flags);
> break;
> case 1:
> - cfg.dir = STEDMA40_PERIPH_TO_MEM;
> + cfg.dir = DMA_DEV_TO_MEM;
> cfg.src_info.big_endian = D40_DT_FLAGS_BIG_ENDIAN(flags);
> break;
> }
> @@ -2473,7 +2473,7 @@ static int d40_alloc_chan_resources(struct dma_chan *chan)
> d40_set_prio_realtime(d40c);
>
> if (chan_is_logical(d40c)) {
> - if (d40c->dma_cfg.dir == STEDMA40_PERIPH_TO_MEM)
> + if (d40c->dma_cfg.dir == DMA_DEV_TO_MEM)
> d40c->lcpa = d40c->base->lcpa_base +
> d40c->dma_cfg.dev_type * D40_LCPA_CHAN_SIZE;
> else
> @@ -2746,12 +2746,12 @@ static int d40_set_runtime_config(struct dma_chan *chan,
> if (config->direction == DMA_DEV_TO_MEM) {
> config_addr = config->src_addr;
>
> - if (cfg->dir != STEDMA40_PERIPH_TO_MEM)
> + if (cfg->dir != DMA_DEV_TO_MEM)
> dev_dbg(d40c->base->dev,
> "channel was not configured for peripheral "
> "to memory transfer (%d) overriding\n",
> cfg->dir);
> - cfg->dir = STEDMA40_PERIPH_TO_MEM;
> + cfg->dir = DMA_DEV_TO_MEM;
>
> /* Configure the memory side */
> if (dst_addr_width == DMA_SLAVE_BUSWIDTH_UNDEFINED)
> @@ -2762,12 +2762,12 @@ static int d40_set_runtime_config(struct dma_chan *chan,
> } else if (config->direction == DMA_MEM_TO_DEV) {
> config_addr = config->dst_addr;
>
> - if (cfg->dir != STEDMA40_MEM_TO_PERIPH)
> + if (cfg->dir != DMA_MEM_TO_DEV)
> dev_dbg(d40c->base->dev,
> "channel was not configured for memory "
> "to peripheral transfer (%d) overriding\n",
> cfg->dir);
> - cfg->dir = STEDMA40_MEM_TO_PERIPH;
> + cfg->dir = DMA_MEM_TO_DEV;
>
> /* Configure the memory side */
> if (src_addr_width == DMA_SLAVE_BUSWIDTH_UNDEFINED)
> diff --git a/drivers/dma/ste_dma40_ll.c b/drivers/dma/ste_dma40_ll.c
> index ab5a2a7..121c0ce 100644
> --- a/drivers/dma/ste_dma40_ll.c
> +++ b/drivers/dma/ste_dma40_ll.c
> @@ -18,23 +18,23 @@ void d40_log_cfg(struct stedma40_chan_cfg *cfg,
> u32 l1 = 0; /* src */
>
> /* src is mem? -> increase address pos */
> - if (cfg->dir == STEDMA40_MEM_TO_PERIPH ||
> - cfg->dir == STEDMA40_MEM_TO_MEM)
> + if (cfg->dir == DMA_MEM_TO_DEV ||
> + cfg->dir == DMA_MEM_TO_MEM)
> l1 |= 1 << D40_MEM_LCSP1_SCFG_INCR_POS;
>
> /* dst is mem? -> increase address pos */
> - if (cfg->dir == STEDMA40_PERIPH_TO_MEM ||
> - cfg->dir == STEDMA40_MEM_TO_MEM)
> + if (cfg->dir == DMA_DEV_TO_MEM ||
> + cfg->dir == DMA_MEM_TO_MEM)
> l3 |= 1 << D40_MEM_LCSP3_DCFG_INCR_POS;
>
> /* src is hw? -> master port 1 */
> - if (cfg->dir == STEDMA40_PERIPH_TO_MEM ||
> - cfg->dir == STEDMA40_PERIPH_TO_PERIPH)
> + if (cfg->dir == DMA_DEV_TO_MEM ||
> + cfg->dir == DMA_DEV_TO_DEV)
> l1 |= 1 << D40_MEM_LCSP1_SCFG_MST_POS;
>
> /* dst is hw? -> master port 1 */
> - if (cfg->dir == STEDMA40_MEM_TO_PERIPH ||
> - cfg->dir == STEDMA40_PERIPH_TO_PERIPH)
> + if (cfg->dir == DMA_MEM_TO_DEV ||
> + cfg->dir == DMA_DEV_TO_DEV)
> l3 |= 1 << D40_MEM_LCSP3_DCFG_MST_POS;
>
> l3 |= 1 << D40_MEM_LCSP3_DCFG_EIM_POS;
> @@ -55,8 +55,8 @@ void d40_phy_cfg(struct stedma40_chan_cfg *cfg, u32 *src_cfg, u32 *dst_cfg)
> u32 src = 0;
> u32 dst = 0;
>
> - if ((cfg->dir == STEDMA40_PERIPH_TO_MEM) ||
> - (cfg->dir == STEDMA40_PERIPH_TO_PERIPH)) {
> + if ((cfg->dir == DMA_DEV_TO_MEM) ||
> + (cfg->dir == DMA_DEV_TO_DEV)) {
> /* Set master port to 1 */
> src |= 1 << D40_SREG_CFG_MST_POS;
> src |= D40_TYPE_TO_EVENT(cfg->dev_type);
> @@ -66,8 +66,8 @@ void d40_phy_cfg(struct stedma40_chan_cfg *cfg, u32 *src_cfg, u32 *dst_cfg)
> else
> src |= 3 << D40_SREG_CFG_PHY_TM_POS;
> }
> - if ((cfg->dir == STEDMA40_MEM_TO_PERIPH) ||
> - (cfg->dir == STEDMA40_PERIPH_TO_PERIPH)) {
> + if ((cfg->dir == DMA_MEM_TO_DEV) ||
> + (cfg->dir == DMA_DEV_TO_DEV)) {
> /* Set master port to 1 */
> dst |= 1 << D40_SREG_CFG_MST_POS;
> dst |= D40_TYPE_TO_EVENT(cfg->dev_type);
> --
> 1.7.10.4
>
--
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