Lines Matching +full:edma +full:- +full:err
1 // SPDX-License-Identifier: GPL-2.0+
3 // Copyright (c) 2013-2014 Freescale Semiconductor, Inc
10 #include <linux/platform_data/dma-mcf-edma.h>
12 #include "fsl-edma-common.h"
20 struct edma_regs *regs = &mcf_edma->regs; in mcf_edma_tx_handler()
24 intmap = ioread32(regs->inth); in mcf_edma_tx_handler()
26 intmap |= ioread32(regs->intl); in mcf_edma_tx_handler()
30 for (ch = 0; ch < mcf_edma->n_chans; ch++) { in mcf_edma_tx_handler()
32 iowrite8(EDMA_MASK_CH(ch), regs->cint); in mcf_edma_tx_handler()
33 fsl_edma_tx_chan_handler(&mcf_edma->chans[ch]); in mcf_edma_tx_handler()
43 struct edma_regs *regs = &mcf_edma->regs; in mcf_edma_err_handler()
44 unsigned int err, ch; in mcf_edma_err_handler() local
46 err = ioread32(regs->errl); in mcf_edma_err_handler()
47 if (!err) in mcf_edma_err_handler()
51 if (err & BIT(ch)) { in mcf_edma_err_handler()
52 fsl_edma_disable_request(&mcf_edma->chans[ch]); in mcf_edma_err_handler()
53 iowrite8(EDMA_CERR_CERR(ch), regs->cerr); in mcf_edma_err_handler()
54 fsl_edma_err_chan_handler(&mcf_edma->chans[ch]); in mcf_edma_err_handler()
58 err = ioread32(regs->errh); in mcf_edma_err_handler()
59 if (!err) in mcf_edma_err_handler()
63 if (err & (BIT(ch - (EDMA_CHANNELS / 2)))) { in mcf_edma_err_handler()
64 fsl_edma_disable_request(&mcf_edma->chans[ch]); in mcf_edma_err_handler()
65 iowrite8(EDMA_CERR_CERR(ch), regs->cerr); in mcf_edma_err_handler()
66 mcf_edma->chans[ch].status = DMA_ERROR; in mcf_edma_err_handler()
67 mcf_edma->chans[ch].idle = true; in mcf_edma_err_handler()
81 IORESOURCE_IRQ, "edma-tx-00-15"); in mcf_edma_irq_init()
83 return -1; in mcf_edma_irq_init()
85 for (ret = 0, i = res->start; i <= res->end; ++i) in mcf_edma_irq_init()
86 ret |= request_irq(i, mcf_edma_tx_handler, 0, "eDMA", mcf_edma); in mcf_edma_irq_init()
91 IORESOURCE_IRQ, "edma-tx-16-55"); in mcf_edma_irq_init()
93 return -1; in mcf_edma_irq_init()
95 for (ret = 0, i = res->start; i <= res->end; ++i) in mcf_edma_irq_init()
96 ret |= request_irq(i, mcf_edma_tx_handler, 0, "eDMA", mcf_edma); in mcf_edma_irq_init()
100 ret = platform_get_irq_byname(pdev, "edma-tx-56-63"); in mcf_edma_irq_init()
101 if (ret != -ENXIO) { in mcf_edma_irq_init()
103 0, "eDMA", mcf_edma); in mcf_edma_irq_init()
108 ret = platform_get_irq_byname(pdev, "edma-err"); in mcf_edma_irq_init()
109 if (ret != -ENXIO) { in mcf_edma_irq_init()
111 0, "eDMA", mcf_edma); in mcf_edma_irq_init()
126 IORESOURCE_IRQ, "edma-tx-00-15"); in mcf_edma_irq_free()
128 for (irq = res->start; irq <= res->end; irq++) in mcf_edma_irq_free()
133 IORESOURCE_IRQ, "edma-tx-16-55"); in mcf_edma_irq_free()
135 for (irq = res->start; irq <= res->end; irq++) in mcf_edma_irq_free()
139 irq = platform_get_irq_byname(pdev, "edma-tx-56-63"); in mcf_edma_irq_free()
140 if (irq != -ENXIO) in mcf_edma_irq_free()
143 irq = platform_get_irq_byname(pdev, "edma-err"); in mcf_edma_irq_free()
144 if (irq != -ENXIO) in mcf_edma_irq_free()
160 pdata = dev_get_platdata(&pdev->dev); in mcf_edma_probe()
162 dev_err(&pdev->dev, "no platform data supplied\n"); in mcf_edma_probe()
163 return -EINVAL; in mcf_edma_probe()
166 if (!pdata->dma_channels) { in mcf_edma_probe()
167 dev_info(&pdev->dev, "setting default channel number to 64"); in mcf_edma_probe()
170 chans = pdata->dma_channels; in mcf_edma_probe()
173 mcf_edma = devm_kzalloc(&pdev->dev, struct_size(mcf_edma, chans, chans), in mcf_edma_probe()
176 return -ENOMEM; in mcf_edma_probe()
178 mcf_edma->n_chans = chans; in mcf_edma_probe()
180 /* Set up drvdata for ColdFire edma */ in mcf_edma_probe()
181 mcf_edma->drvdata = &mcf_data; in mcf_edma_probe()
182 mcf_edma->big_endian = 1; in mcf_edma_probe()
184 mutex_init(&mcf_edma->fsl_edma_mutex); in mcf_edma_probe()
186 mcf_edma->membase = devm_platform_ioremap_resource(pdev, 0); in mcf_edma_probe()
187 if (IS_ERR(mcf_edma->membase)) in mcf_edma_probe()
188 return PTR_ERR(mcf_edma->membase); in mcf_edma_probe()
191 regs = &mcf_edma->regs; in mcf_edma_probe()
193 INIT_LIST_HEAD(&mcf_edma->dma_dev.channels); in mcf_edma_probe()
194 for (i = 0; i < mcf_edma->n_chans; i++) { in mcf_edma_probe()
195 struct fsl_edma_chan *mcf_chan = &mcf_edma->chans[i]; in mcf_edma_probe()
197 mcf_chan->edma = mcf_edma; in mcf_edma_probe()
198 mcf_chan->slave_id = i; in mcf_edma_probe()
199 mcf_chan->idle = true; in mcf_edma_probe()
200 mcf_chan->dma_dir = DMA_NONE; in mcf_edma_probe()
201 mcf_chan->vchan.desc_free = fsl_edma_free_desc; in mcf_edma_probe()
202 vchan_init(&mcf_chan->vchan, &mcf_edma->dma_dev); in mcf_edma_probe()
203 mcf_chan->tcd = mcf_edma->membase + EDMA_TCD in mcf_edma_probe()
205 iowrite32(0x0, &mcf_chan->tcd->csr); in mcf_edma_probe()
208 iowrite32(~0, regs->inth); in mcf_edma_probe()
209 iowrite32(~0, regs->intl); in mcf_edma_probe()
211 ret = mcf_edma->drvdata->setup_irq(pdev, mcf_edma); in mcf_edma_probe()
215 dma_cap_set(DMA_PRIVATE, mcf_edma->dma_dev.cap_mask); in mcf_edma_probe()
216 dma_cap_set(DMA_SLAVE, mcf_edma->dma_dev.cap_mask); in mcf_edma_probe()
217 dma_cap_set(DMA_CYCLIC, mcf_edma->dma_dev.cap_mask); in mcf_edma_probe()
219 mcf_edma->dma_dev.dev = &pdev->dev; in mcf_edma_probe()
220 mcf_edma->dma_dev.device_alloc_chan_resources = in mcf_edma_probe()
222 mcf_edma->dma_dev.device_free_chan_resources = in mcf_edma_probe()
224 mcf_edma->dma_dev.device_config = fsl_edma_slave_config; in mcf_edma_probe()
225 mcf_edma->dma_dev.device_prep_dma_cyclic = in mcf_edma_probe()
227 mcf_edma->dma_dev.device_prep_slave_sg = fsl_edma_prep_slave_sg; in mcf_edma_probe()
228 mcf_edma->dma_dev.device_tx_status = fsl_edma_tx_status; in mcf_edma_probe()
229 mcf_edma->dma_dev.device_pause = fsl_edma_pause; in mcf_edma_probe()
230 mcf_edma->dma_dev.device_resume = fsl_edma_resume; in mcf_edma_probe()
231 mcf_edma->dma_dev.device_terminate_all = fsl_edma_terminate_all; in mcf_edma_probe()
232 mcf_edma->dma_dev.device_issue_pending = fsl_edma_issue_pending; in mcf_edma_probe()
234 mcf_edma->dma_dev.src_addr_widths = FSL_EDMA_BUSWIDTHS; in mcf_edma_probe()
235 mcf_edma->dma_dev.dst_addr_widths = FSL_EDMA_BUSWIDTHS; in mcf_edma_probe()
236 mcf_edma->dma_dev.directions = in mcf_edma_probe()
239 mcf_edma->dma_dev.filter.fn = mcf_edma_filter_fn; in mcf_edma_probe()
240 mcf_edma->dma_dev.filter.map = pdata->slave_map; in mcf_edma_probe()
241 mcf_edma->dma_dev.filter.mapcnt = pdata->slavecnt; in mcf_edma_probe()
245 ret = dma_async_device_register(&mcf_edma->dma_dev); in mcf_edma_probe()
247 dev_err(&pdev->dev, in mcf_edma_probe()
248 "Can't register Freescale eDMA engine. (%d)\n", ret); in mcf_edma_probe()
253 iowrite32(EDMA_CR_ERGA | EDMA_CR_ERCA, regs->cr); in mcf_edma_probe()
263 fsl_edma_cleanup_vchan(&mcf_edma->dma_dev); in mcf_edma_remove()
264 dma_async_device_unregister(&mcf_edma->dma_dev); in mcf_edma_remove()
271 .name = "mcf-edma",
279 if (chan->device->dev->driver == &mcf_edma_driver.driver) { in mcf_edma_filter_fn()
282 return (mcf_chan->slave_id == (uintptr_t)param); in mcf_edma_filter_fn()
301 MODULE_ALIAS("platform:mcf-edma");
302 MODULE_DESCRIPTION("Freescale eDMA engine driver, ColdFire family");