Lines Matching refs: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
124 dw->initialize_chan(dwc); in dwc_initialize()
127 channel_set_bit(dw, MASK.XFER, dwc->mask); in dwc_initialize()
128 channel_set_bit(dw, MASK.ERROR, dwc->mask); in dwc_initialize()
146 static inline void dwc_chan_disable(struct dw_dma *dw, struct dw_dma_chan *dwc) in dwc_chan_disable() argument
148 channel_clear_bit(dw, CH_EN, dwc->mask); in dwc_chan_disable()
149 while (dma_readl(dw, CH_EN) & dwc->mask) in dwc_chan_disable()
159 struct dw_dma *dw = to_dw_dma(dwc->chan.device); in dwc_do_single_block() local
172 channel_set_bit(dw, CH_EN, dwc->mask); in dwc_do_single_block()
181 struct dw_dma *dw = to_dw_dma(dwc->chan.device); in dwc_dostart() local
186 if (dma_readl(dw, CH_EN) & dwc->mask) { in dwc_dostart()
221 channel_set_bit(dw, CH_EN, dwc->mask); in dwc_dostart()
267 static void dwc_complete_all(struct dw_dma *dw, struct dw_dma_chan *dwc) in dwc_complete_all() argument
274 if (dma_readl(dw, CH_EN) & dwc->mask) { in dwc_complete_all()
279 dwc_chan_disable(dw, dwc); in dwc_complete_all()
298 struct dw_dma *dw = to_dw_dma(dwc->chan.device); in dwc_get_sent() local
302 return dw->block2bytes(dwc, ctlhi, ctllo >> 4 & 7); in dwc_get_sent()
305 static void dwc_scan_descriptors(struct dw_dma *dw, struct dw_dma_chan *dwc) in dwc_scan_descriptors() argument
315 status_xfer = dma_readl(dw, RAW.XFER); in dwc_scan_descriptors()
319 dma_writel(dw, CLEAR.XFER, dwc->mask); in dwc_scan_descriptors()
353 dwc_complete_all(dw, dwc); in dwc_scan_descriptors()
412 dwc_chan_disable(dw, dwc); in dwc_scan_descriptors()
428 static void dwc_handle_error(struct dw_dma *dw, struct dw_dma_chan *dwc) in dwc_handle_error() argument
434 dwc_scan_descriptors(dw, dwc); in dwc_handle_error()
448 dma_writel(dw, CLEAR.ERROR, dwc->mask); in dwc_handle_error()
473 struct dw_dma *dw = (struct dw_dma *)data; in dw_dma_tasklet() local
479 status_xfer = dma_readl(dw, RAW.XFER); in dw_dma_tasklet()
480 status_err = dma_readl(dw, RAW.ERROR); in dw_dma_tasklet()
482 dev_vdbg(dw->dma.dev, "%s: status_err=%x\n", __func__, status_err); in dw_dma_tasklet()
484 for (i = 0; i < dw->dma.chancnt; i++) { in dw_dma_tasklet()
485 dwc = &dw->chan[i]; in dw_dma_tasklet()
487 dev_vdbg(dw->dma.dev, "Cyclic xfer is not implemented\n"); in dw_dma_tasklet()
489 dwc_handle_error(dw, dwc); in dw_dma_tasklet()
491 dwc_scan_descriptors(dw, dwc); in dw_dma_tasklet()
495 channel_set_bit(dw, MASK.XFER, dw->all_chan_mask); in dw_dma_tasklet()
496 channel_set_bit(dw, MASK.ERROR, dw->all_chan_mask); in dw_dma_tasklet()
501 struct dw_dma *dw = dev_id; in dw_dma_interrupt() local
505 if (!dw->in_use) in dw_dma_interrupt()
508 status = dma_readl(dw, STATUS_INT); in dw_dma_interrupt()
509 dev_vdbg(dw->dma.dev, "%s: status=0x%x\n", __func__, status); in dw_dma_interrupt()
519 channel_clear_bit(dw, MASK.XFER, dw->all_chan_mask); in dw_dma_interrupt()
520 channel_clear_bit(dw, MASK.BLOCK, dw->all_chan_mask); in dw_dma_interrupt()
521 channel_clear_bit(dw, MASK.ERROR, dw->all_chan_mask); in dw_dma_interrupt()
523 status = dma_readl(dw, STATUS_INT); in dw_dma_interrupt()
525 dev_err(dw->dma.dev, in dw_dma_interrupt()
530 channel_clear_bit(dw, MASK.XFER, (1 << 8) - 1); in dw_dma_interrupt()
531 channel_clear_bit(dw, MASK.BLOCK, (1 << 8) - 1); in dw_dma_interrupt()
532 channel_clear_bit(dw, MASK.SRC_TRAN, (1 << 8) - 1); in dw_dma_interrupt()
533 channel_clear_bit(dw, MASK.DST_TRAN, (1 << 8) - 1); in dw_dma_interrupt()
534 channel_clear_bit(dw, MASK.ERROR, (1 << 8) - 1); in dw_dma_interrupt()
537 tasklet_schedule(&dw->tasklet); in dw_dma_interrupt()
549 struct dw_dma *dw = to_dw_dma(chan->device); in dwc_prep_dma_memcpy() local
558 unsigned int data_width = dw->pdata->data_width[m_master]; in dwc_prep_dma_memcpy()
575 ctllo = dw->prepare_ctllo(dwc) in dwc_prep_dma_memcpy()
588 ctlhi = dw->bytes2block(dwc, len - offset, src_width, &xfer_count); in dwc_prep_dma_memcpy()
627 struct dw_dma *dw = to_dw_dma(chan->device); in dwc_prep_slave_sg() local
637 unsigned int data_width = dw->pdata->data_width[m_master]; in dwc_prep_slave_sg()
655 ctllo = dw->prepare_ctllo(dwc) in dwc_prep_slave_sg()
678 ctlhi = dw->bytes2block(dwc, len, mem_width, &dlen); in dwc_prep_slave_sg()
705 ctllo = dw->prepare_ctllo(dwc) in dwc_prep_slave_sg()
726 ctlhi = dw->bytes2block(dwc, len, reg_width, &dlen); in dwc_prep_slave_sg()
790 struct dw_dma *dw = to_dw_dma(chan->device); in dwc_config() local
794 dw->encode_maxburst(dwc, &dwc->dma_sconfig.src_maxburst); in dwc_config()
795 dw->encode_maxburst(dwc, &dwc->dma_sconfig.dst_maxburst); in dwc_config()
802 struct dw_dma *dw = to_dw_dma(dwc->chan.device); in dwc_chan_pause() local
805 dw->suspend_chan(dwc, drain); in dwc_chan_pause()
827 struct dw_dma *dw = to_dw_dma(dwc->chan.device); in dwc_chan_resume() local
829 dw->resume_chan(dwc, drain); in dwc_chan_resume()
852 struct dw_dma *dw = to_dw_dma(chan->device); in dwc_terminate_all() local
863 dwc_chan_disable(dw, dwc); in dwc_terminate_all()
955 void do_dw_dma_off(struct dw_dma *dw) in do_dw_dma_off() argument
959 dma_writel(dw, CFG, 0); in do_dw_dma_off()
961 channel_clear_bit(dw, MASK.XFER, dw->all_chan_mask); in do_dw_dma_off()
962 channel_clear_bit(dw, MASK.BLOCK, dw->all_chan_mask); in do_dw_dma_off()
963 channel_clear_bit(dw, MASK.SRC_TRAN, dw->all_chan_mask); in do_dw_dma_off()
964 channel_clear_bit(dw, MASK.DST_TRAN, dw->all_chan_mask); in do_dw_dma_off()
965 channel_clear_bit(dw, MASK.ERROR, dw->all_chan_mask); in do_dw_dma_off()
967 while (dma_readl(dw, CFG) & DW_CFG_DMA_EN) in do_dw_dma_off()
970 for (i = 0; i < dw->dma.chancnt; i++) in do_dw_dma_off()
971 clear_bit(DW_DMA_IS_INITIALIZED, &dw->chan[i].flags); in do_dw_dma_off()
974 void do_dw_dma_on(struct dw_dma *dw) in do_dw_dma_on() argument
976 dma_writel(dw, CFG, DW_CFG_DMA_EN); in do_dw_dma_on()
982 struct dw_dma *dw = to_dw_dma(chan->device); in dwc_alloc_chan_resources() local
987 if (dma_readl(dw, CH_EN) & dwc->mask) { in dwc_alloc_chan_resources()
1009 if (!dw->in_use) in dwc_alloc_chan_resources()
1010 do_dw_dma_on(dw); in dwc_alloc_chan_resources()
1011 dw->in_use |= dwc->mask; in dwc_alloc_chan_resources()
1019 struct dw_dma *dw = to_dw_dma(chan->device); in dwc_free_chan_resources() local
1038 channel_clear_bit(dw, MASK.XFER, dwc->mask); in dwc_free_chan_resources()
1039 channel_clear_bit(dw, MASK.BLOCK, dwc->mask); in dwc_free_chan_resources()
1040 channel_clear_bit(dw, MASK.ERROR, dwc->mask); in dwc_free_chan_resources()
1045 dw->in_use &= ~dwc->mask; in dwc_free_chan_resources()
1046 if (!dw->in_use) in dwc_free_chan_resources()
1047 do_dw_dma_off(dw); in dwc_free_chan_resources()
1054 struct dw_dma *dw = chip->dw; in do_dma_probe() local
1061 dw->pdata = devm_kzalloc(chip->dev, sizeof(*dw->pdata), GFP_KERNEL); in do_dma_probe()
1062 if (!dw->pdata) in do_dma_probe()
1065 dw->regs = chip->regs; in do_dma_probe()
1070 dw_params = dma_readl(dw, DW_PARAMS); in do_dma_probe()
1080 pdata = dw->pdata; in do_dma_probe()
1089 pdata->block_size = dma_readl(dw, MAX_BLK_SIZE); in do_dma_probe()
1098 memcpy(dw->pdata, chip->pdata, sizeof(*dw->pdata)); in do_dma_probe()
1101 pdata = dw->pdata; in do_dma_probe()
1104 dw->chan = devm_kcalloc(chip->dev, pdata->nr_channels, sizeof(*dw->chan), in do_dma_probe()
1106 if (!dw->chan) { in do_dma_probe()
1112 dw->all_chan_mask = (1 << pdata->nr_channels) - 1; in do_dma_probe()
1115 dw->disable(dw); in do_dma_probe()
1118 dw->set_device_name(dw, chip->id); in do_dma_probe()
1121 dw->desc_pool = dmam_pool_create(dw->name, chip->dev, in do_dma_probe()
1123 if (!dw->desc_pool) { in do_dma_probe()
1129 tasklet_init(&dw->tasklet, dw_dma_tasklet, (unsigned long)dw); in do_dma_probe()
1132 dw->name, dw); in do_dma_probe()
1136 INIT_LIST_HEAD(&dw->dma.channels); in do_dma_probe()
1138 struct dw_dma_chan *dwc = &dw->chan[i]; in do_dma_probe()
1140 dwc->chan.device = &dw->dma; in do_dma_probe()
1144 &dw->dma.channels); in do_dma_probe()
1146 list_add(&dwc->chan.device_node, &dw->dma.channels); in do_dma_probe()
1154 dwc->ch_regs = &__dw_regs(dw)->CHAN[i]; in do_dma_probe()
1161 channel_clear_bit(dw, CH_EN, dwc->mask); in do_dma_probe()
1168 void __iomem *addr = &__dw_regs(dw)->DWC_PARAMS[r]; in do_dma_probe()
1190 dma_writel(dw, CLEAR.XFER, dw->all_chan_mask); in do_dma_probe()
1191 dma_writel(dw, CLEAR.BLOCK, dw->all_chan_mask); in do_dma_probe()
1192 dma_writel(dw, CLEAR.SRC_TRAN, dw->all_chan_mask); in do_dma_probe()
1193 dma_writel(dw, CLEAR.DST_TRAN, dw->all_chan_mask); in do_dma_probe()
1194 dma_writel(dw, CLEAR.ERROR, dw->all_chan_mask); in do_dma_probe()
1197 dma_cap_set(DMA_SLAVE, dw->dma.cap_mask); in do_dma_probe()
1198 dma_cap_set(DMA_PRIVATE, dw->dma.cap_mask); in do_dma_probe()
1199 dma_cap_set(DMA_MEMCPY, dw->dma.cap_mask); in do_dma_probe()
1201 dw->dma.dev = chip->dev; in do_dma_probe()
1202 dw->dma.device_alloc_chan_resources = dwc_alloc_chan_resources; in do_dma_probe()
1203 dw->dma.device_free_chan_resources = dwc_free_chan_resources; in do_dma_probe()
1205 dw->dma.device_prep_dma_memcpy = dwc_prep_dma_memcpy; in do_dma_probe()
1206 dw->dma.device_prep_slave_sg = dwc_prep_slave_sg; in do_dma_probe()
1208 dw->dma.device_config = dwc_config; in do_dma_probe()
1209 dw->dma.device_pause = dwc_pause; in do_dma_probe()
1210 dw->dma.device_resume = dwc_resume; in do_dma_probe()
1211 dw->dma.device_terminate_all = dwc_terminate_all; in do_dma_probe()
1213 dw->dma.device_tx_status = dwc_tx_status; in do_dma_probe()
1214 dw->dma.device_issue_pending = dwc_issue_pending; in do_dma_probe()
1217 dw->dma.src_addr_widths = DW_DMA_BUSWIDTHS; in do_dma_probe()
1218 dw->dma.dst_addr_widths = DW_DMA_BUSWIDTHS; in do_dma_probe()
1219 dw->dma.directions = BIT(DMA_DEV_TO_MEM) | BIT(DMA_MEM_TO_DEV) | in do_dma_probe()
1221 dw->dma.residue_granularity = DMA_RESIDUE_GRANULARITY_BURST; in do_dma_probe()
1223 err = dma_async_device_register(&dw->dma); in do_dma_probe()
1235 free_irq(chip->irq, dw); in do_dma_probe()
1243 struct dw_dma *dw = chip->dw; in do_dma_remove() local
1248 do_dw_dma_off(dw); in do_dma_remove()
1249 dma_async_device_unregister(&dw->dma); in do_dma_remove()
1251 free_irq(chip->irq, dw); in do_dma_remove()
1252 tasklet_kill(&dw->tasklet); in do_dma_remove()
1254 list_for_each_entry_safe(dwc, _dwc, &dw->dma.channels, in do_dma_remove()
1257 channel_clear_bit(dw, CH_EN, dwc->mask); in do_dma_remove()
1266 struct dw_dma *dw = chip->dw; in do_dw_dma_disable() local
1268 dw->disable(dw); in do_dw_dma_disable()
1275 struct dw_dma *dw = chip->dw; in do_dw_dma_enable() local
1277 dw->enable(dw); in do_dw_dma_enable()