Lines Matching full:dw
82 struct dw_dma *dw = to_dw_dma(dwc->chan.device); in dwc_desc_get() local
86 desc = dma_pool_zalloc(dw->desc_pool, GFP_ATOMIC, &phys); in dwc_desc_get()
101 struct dw_dma *dw = to_dw_dma(dwc->chan.device); in dwc_desc_put() local
109 dma_pool_free(dw->desc_pool, child, child->txd.phys); in dwc_desc_put()
113 dma_pool_free(dw->desc_pool, desc, desc->txd.phys); in dwc_desc_put()
119 struct dw_dma *dw = to_dw_dma(dwc->chan.device); in dwc_initialize() local
121 dw->initialize_chan(dwc); in dwc_initialize()
124 channel_set_bit(dw, MASK.XFER, dwc->mask); in dwc_initialize()
125 channel_set_bit(dw, MASK.ERROR, dwc->mask); in dwc_initialize()
141 static inline void dwc_chan_disable(struct dw_dma *dw, struct dw_dma_chan *dwc) in dwc_chan_disable() argument
143 channel_clear_bit(dw, CH_EN, dwc->mask); in dwc_chan_disable()
144 while (dma_readl(dw, CH_EN) & dwc->mask) in dwc_chan_disable()
154 struct dw_dma *dw = to_dw_dma(dwc->chan.device); in dwc_do_single_block() local
167 channel_set_bit(dw, CH_EN, dwc->mask); in dwc_do_single_block()
176 struct dw_dma *dw = to_dw_dma(dwc->chan.device); in dwc_dostart() local
181 if (dma_readl(dw, CH_EN) & dwc->mask) { in dwc_dostart()
216 channel_set_bit(dw, CH_EN, dwc->mask); in dwc_dostart()
262 static void dwc_complete_all(struct dw_dma *dw, struct dw_dma_chan *dwc) in dwc_complete_all() argument
269 if (dma_readl(dw, CH_EN) & dwc->mask) { in dwc_complete_all()
274 dwc_chan_disable(dw, dwc); in dwc_complete_all()
293 struct dw_dma *dw = to_dw_dma(dwc->chan.device); in dwc_get_sent() local
297 return dw->block2bytes(dwc, ctlhi, ctllo >> 4 & 7); in dwc_get_sent()
300 static void dwc_scan_descriptors(struct dw_dma *dw, struct dw_dma_chan *dwc) in dwc_scan_descriptors() argument
310 status_xfer = dma_readl(dw, RAW.XFER); in dwc_scan_descriptors()
314 dma_writel(dw, CLEAR.XFER, dwc->mask); in dwc_scan_descriptors()
348 dwc_complete_all(dw, dwc); in dwc_scan_descriptors()
407 dwc_chan_disable(dw, dwc); in dwc_scan_descriptors()
423 static void dwc_handle_error(struct dw_dma *dw, struct dw_dma_chan *dwc) in dwc_handle_error() argument
429 dwc_scan_descriptors(dw, dwc); in dwc_handle_error()
443 dma_writel(dw, CLEAR.ERROR, dwc->mask); in dwc_handle_error()
468 struct dw_dma *dw = from_tasklet(dw, t, tasklet); in dw_dma_tasklet() local
474 status_xfer = dma_readl(dw, RAW.XFER); in dw_dma_tasklet()
475 status_err = dma_readl(dw, RAW.ERROR); in dw_dma_tasklet()
477 dev_vdbg(dw->dma.dev, "%s: status_err=%x\n", __func__, status_err); in dw_dma_tasklet()
479 for (i = 0; i < dw->dma.chancnt; i++) { in dw_dma_tasklet()
480 dwc = &dw->chan[i]; in dw_dma_tasklet()
482 dev_vdbg(dw->dma.dev, "Cyclic xfer is not implemented\n"); in dw_dma_tasklet()
484 dwc_handle_error(dw, dwc); in dw_dma_tasklet()
486 dwc_scan_descriptors(dw, dwc); in dw_dma_tasklet()
490 channel_set_bit(dw, MASK.XFER, dw->all_chan_mask); in dw_dma_tasklet()
491 channel_set_bit(dw, MASK.ERROR, dw->all_chan_mask); in dw_dma_tasklet()
496 struct dw_dma *dw = dev_id; in dw_dma_interrupt() local
500 if (!dw->in_use) in dw_dma_interrupt()
503 status = dma_readl(dw, STATUS_INT); in dw_dma_interrupt()
504 dev_vdbg(dw->dma.dev, "%s: status=0x%x\n", __func__, status); in dw_dma_interrupt()
514 channel_clear_bit(dw, MASK.XFER, dw->all_chan_mask); in dw_dma_interrupt()
515 channel_clear_bit(dw, MASK.BLOCK, dw->all_chan_mask); in dw_dma_interrupt()
516 channel_clear_bit(dw, MASK.ERROR, dw->all_chan_mask); in dw_dma_interrupt()
518 status = dma_readl(dw, STATUS_INT); in dw_dma_interrupt()
520 dev_err(dw->dma.dev, in dw_dma_interrupt()
525 channel_clear_bit(dw, MASK.XFER, (1 << 8) - 1); in dw_dma_interrupt()
526 channel_clear_bit(dw, MASK.BLOCK, (1 << 8) - 1); in dw_dma_interrupt()
527 channel_clear_bit(dw, MASK.SRC_TRAN, (1 << 8) - 1); in dw_dma_interrupt()
528 channel_clear_bit(dw, MASK.DST_TRAN, (1 << 8) - 1); in dw_dma_interrupt()
529 channel_clear_bit(dw, MASK.ERROR, (1 << 8) - 1); in dw_dma_interrupt()
532 tasklet_schedule(&dw->tasklet); in dw_dma_interrupt()
544 struct dw_dma *dw = to_dw_dma(chan->device); in dwc_prep_dma_memcpy() local
553 unsigned int data_width = dw->pdata->data_width[m_master]; in dwc_prep_dma_memcpy()
570 ctllo = dw->prepare_ctllo(dwc) in dwc_prep_dma_memcpy()
583 ctlhi = dw->bytes2block(dwc, len - offset, src_width, &xfer_count); in dwc_prep_dma_memcpy()
622 struct dw_dma *dw = to_dw_dma(chan->device); in dwc_prep_slave_sg() local
632 unsigned int data_width = dw->pdata->data_width[m_master]; in dwc_prep_slave_sg()
650 ctllo = dw->prepare_ctllo(dwc) in dwc_prep_slave_sg()
673 ctlhi = dw->bytes2block(dwc, len, mem_width, &dlen); in dwc_prep_slave_sg()
700 ctllo = dw->prepare_ctllo(dwc) in dwc_prep_slave_sg()
721 ctlhi = dw->bytes2block(dwc, len, reg_width, &dlen); in dwc_prep_slave_sg()
789 struct dw_dma *dw = to_dw_dma(chan->device); in dwc_config() local
798 dw->encode_maxburst(dwc, &dwc->dma_sconfig.src_maxburst); in dwc_config()
799 dw->encode_maxburst(dwc, &dwc->dma_sconfig.dst_maxburst); in dwc_config()
806 struct dw_dma *dw = to_dw_dma(dwc->chan.device); in dwc_chan_pause() local
809 dw->suspend_chan(dwc, drain); in dwc_chan_pause()
831 struct dw_dma *dw = to_dw_dma(dwc->chan.device); in dwc_chan_resume() local
833 dw->resume_chan(dwc, drain); in dwc_chan_resume()
856 struct dw_dma *dw = to_dw_dma(chan->device); in dwc_terminate_all() local
867 dwc_chan_disable(dw, dwc); in dwc_terminate_all()
959 void do_dw_dma_off(struct dw_dma *dw) in do_dw_dma_off() argument
961 dma_writel(dw, CFG, 0); in do_dw_dma_off()
963 channel_clear_bit(dw, MASK.XFER, dw->all_chan_mask); in do_dw_dma_off()
964 channel_clear_bit(dw, MASK.BLOCK, dw->all_chan_mask); in do_dw_dma_off()
965 channel_clear_bit(dw, MASK.SRC_TRAN, dw->all_chan_mask); in do_dw_dma_off()
966 channel_clear_bit(dw, MASK.DST_TRAN, dw->all_chan_mask); in do_dw_dma_off()
967 channel_clear_bit(dw, MASK.ERROR, dw->all_chan_mask); in do_dw_dma_off()
969 while (dma_readl(dw, CFG) & DW_CFG_DMA_EN) in do_dw_dma_off()
973 void do_dw_dma_on(struct dw_dma *dw) in do_dw_dma_on() argument
975 dma_writel(dw, CFG, DW_CFG_DMA_EN); in do_dw_dma_on()
981 struct dw_dma *dw = to_dw_dma(chan->device); in dwc_alloc_chan_resources() local
986 if (dma_readl(dw, CH_EN) & dwc->mask) { in dwc_alloc_chan_resources()
1008 if (!dw->in_use) in dwc_alloc_chan_resources()
1009 do_dw_dma_on(dw); in dwc_alloc_chan_resources()
1010 dw->in_use |= dwc->mask; in dwc_alloc_chan_resources()
1018 struct dw_dma *dw = to_dw_dma(chan->device); in dwc_free_chan_resources() local
1035 channel_clear_bit(dw, MASK.XFER, dwc->mask); in dwc_free_chan_resources()
1036 channel_clear_bit(dw, MASK.BLOCK, dwc->mask); in dwc_free_chan_resources()
1037 channel_clear_bit(dw, MASK.ERROR, dwc->mask); in dwc_free_chan_resources()
1042 dw->in_use &= ~dwc->mask; in dwc_free_chan_resources()
1043 if (!dw->in_use) in dwc_free_chan_resources()
1044 do_dw_dma_off(dw); in dwc_free_chan_resources()
1057 * accelerated multi-block transfers supported, aka LLPs in DW DMAC in dwc_caps()
1070 struct dw_dma *dw = chip->dw; in do_dma_probe() local
1077 dw->pdata = devm_kzalloc(chip->dev, sizeof(*dw->pdata), GFP_KERNEL); in do_dma_probe()
1078 if (!dw->pdata) in do_dma_probe()
1081 dw->regs = chip->regs; in do_dma_probe()
1086 dw_params = dma_readl(dw, DW_PARAMS); in do_dma_probe()
1096 pdata = dw->pdata; in do_dma_probe()
1105 pdata->block_size = dma_readl(dw, MAX_BLK_SIZE); in do_dma_probe()
1114 memcpy(dw->pdata, chip->pdata, sizeof(*dw->pdata)); in do_dma_probe()
1117 pdata = dw->pdata; in do_dma_probe()
1120 dw->chan = devm_kcalloc(chip->dev, pdata->nr_channels, sizeof(*dw->chan), in do_dma_probe()
1122 if (!dw->chan) { in do_dma_probe()
1128 dw->all_chan_mask = (1 << pdata->nr_channels) - 1; in do_dma_probe()
1131 dw->disable(dw); in do_dma_probe()
1134 dw->set_device_name(dw, chip->id); in do_dma_probe()
1137 dw->desc_pool = dmam_pool_create(dw->name, chip->dev, in do_dma_probe()
1139 if (!dw->desc_pool) { in do_dma_probe()
1145 tasklet_setup(&dw->tasklet, dw_dma_tasklet); in do_dma_probe()
1148 dw->name, dw); in do_dma_probe()
1152 INIT_LIST_HEAD(&dw->dma.channels); in do_dma_probe()
1154 struct dw_dma_chan *dwc = &dw->chan[i]; in do_dma_probe()
1156 dwc->chan.device = &dw->dma; in do_dma_probe()
1160 &dw->dma.channels); in do_dma_probe()
1162 list_add(&dwc->chan.device_node, &dw->dma.channels); in do_dma_probe()
1170 dwc->ch_regs = &__dw_regs(dw)->CHAN[i]; in do_dma_probe()
1177 channel_clear_bit(dw, CH_EN, dwc->mask); in do_dma_probe()
1184 void __iomem *addr = &__dw_regs(dw)->DWC_PARAMS[r]; in do_dma_probe()
1199 * According to the DW DMA databook the true scatter- in do_dma_probe()
1218 dma_writel(dw, CLEAR.XFER, dw->all_chan_mask); in do_dma_probe()
1219 dma_writel(dw, CLEAR.BLOCK, dw->all_chan_mask); in do_dma_probe()
1220 dma_writel(dw, CLEAR.SRC_TRAN, dw->all_chan_mask); in do_dma_probe()
1221 dma_writel(dw, CLEAR.DST_TRAN, dw->all_chan_mask); in do_dma_probe()
1222 dma_writel(dw, CLEAR.ERROR, dw->all_chan_mask); in do_dma_probe()
1225 dma_cap_set(DMA_SLAVE, dw->dma.cap_mask); in do_dma_probe()
1226 dma_cap_set(DMA_PRIVATE, dw->dma.cap_mask); in do_dma_probe()
1227 dma_cap_set(DMA_MEMCPY, dw->dma.cap_mask); in do_dma_probe()
1229 dw->dma.dev = chip->dev; in do_dma_probe()
1230 dw->dma.device_alloc_chan_resources = dwc_alloc_chan_resources; in do_dma_probe()
1231 dw->dma.device_free_chan_resources = dwc_free_chan_resources; in do_dma_probe()
1233 dw->dma.device_prep_dma_memcpy = dwc_prep_dma_memcpy; in do_dma_probe()
1234 dw->dma.device_prep_slave_sg = dwc_prep_slave_sg; in do_dma_probe()
1236 dw->dma.device_caps = dwc_caps; in do_dma_probe()
1237 dw->dma.device_config = dwc_config; in do_dma_probe()
1238 dw->dma.device_pause = dwc_pause; in do_dma_probe()
1239 dw->dma.device_resume = dwc_resume; in do_dma_probe()
1240 dw->dma.device_terminate_all = dwc_terminate_all; in do_dma_probe()
1242 dw->dma.device_tx_status = dwc_tx_status; in do_dma_probe()
1243 dw->dma.device_issue_pending = dwc_issue_pending; in do_dma_probe()
1246 dw->dma.min_burst = DW_DMA_MIN_BURST; in do_dma_probe()
1247 dw->dma.max_burst = DW_DMA_MAX_BURST; in do_dma_probe()
1248 dw->dma.src_addr_widths = DW_DMA_BUSWIDTHS; in do_dma_probe()
1249 dw->dma.dst_addr_widths = DW_DMA_BUSWIDTHS; in do_dma_probe()
1250 dw->dma.directions = BIT(DMA_DEV_TO_MEM) | BIT(DMA_MEM_TO_DEV) | in do_dma_probe()
1252 dw->dma.residue_granularity = DMA_RESIDUE_GRANULARITY_BURST; in do_dma_probe()
1259 dma_set_max_seg_size(dw->dma.dev, dw->chan[0].block_size); in do_dma_probe()
1261 err = dma_async_device_register(&dw->dma); in do_dma_probe()
1273 free_irq(chip->irq, dw); in do_dma_probe()
1281 struct dw_dma *dw = chip->dw; in do_dma_remove() local
1286 do_dw_dma_off(dw); in do_dma_remove()
1287 dma_async_device_unregister(&dw->dma); in do_dma_remove()
1289 free_irq(chip->irq, dw); in do_dma_remove()
1290 tasklet_kill(&dw->tasklet); in do_dma_remove()
1292 list_for_each_entry_safe(dwc, _dwc, &dw->dma.channels, in do_dma_remove()
1295 channel_clear_bit(dw, CH_EN, dwc->mask); in do_dma_remove()
1304 struct dw_dma *dw = chip->dw; in do_dw_dma_disable() local
1306 dw->disable(dw); in do_dw_dma_disable()
1313 struct dw_dma *dw = chip->dw; in do_dw_dma_enable() local
1315 dw->enable(dw); in do_dw_dma_enable()