Lines Matching full:mspi
52 void fsl_spi_cpm_reinit_txrx(struct mpc8xxx_spi *mspi) in fsl_spi_cpm_reinit_txrx() argument
54 if (mspi->flags & SPI_QE) { in fsl_spi_cpm_reinit_txrx()
55 qe_issue_cmd(QE_INIT_TX_RX, mspi->subblock, in fsl_spi_cpm_reinit_txrx()
58 if (mspi->flags & SPI_CPM1) { in fsl_spi_cpm_reinit_txrx()
59 iowrite32be(0, &mspi->pram->rstate); in fsl_spi_cpm_reinit_txrx()
60 iowrite16be(ioread16be(&mspi->pram->rbase), in fsl_spi_cpm_reinit_txrx()
61 &mspi->pram->rbptr); in fsl_spi_cpm_reinit_txrx()
62 iowrite32be(0, &mspi->pram->tstate); in fsl_spi_cpm_reinit_txrx()
63 iowrite16be(ioread16be(&mspi->pram->tbase), in fsl_spi_cpm_reinit_txrx()
64 &mspi->pram->tbptr); in fsl_spi_cpm_reinit_txrx()
72 static void fsl_spi_cpm_bufs_start(struct mpc8xxx_spi *mspi) in fsl_spi_cpm_bufs_start() argument
74 struct cpm_buf_desc __iomem *tx_bd = mspi->tx_bd; in fsl_spi_cpm_bufs_start()
75 struct cpm_buf_desc __iomem *rx_bd = mspi->rx_bd; in fsl_spi_cpm_bufs_start()
76 unsigned int xfer_len = min(mspi->count, SPI_MRBLR); in fsl_spi_cpm_bufs_start()
78 struct fsl_spi_reg __iomem *reg_base = mspi->reg_base; in fsl_spi_cpm_bufs_start()
80 xfer_ofs = mspi->xfer_in_progress->len - mspi->count; in fsl_spi_cpm_bufs_start()
82 if (mspi->rx_dma == mspi->dma_dummy_rx) in fsl_spi_cpm_bufs_start()
83 iowrite32be(mspi->rx_dma, &rx_bd->cbd_bufaddr); in fsl_spi_cpm_bufs_start()
85 iowrite32be(mspi->rx_dma + xfer_ofs, &rx_bd->cbd_bufaddr); in fsl_spi_cpm_bufs_start()
89 if (mspi->tx_dma == mspi->dma_dummy_tx) in fsl_spi_cpm_bufs_start()
90 iowrite32be(mspi->tx_dma, &tx_bd->cbd_bufaddr); in fsl_spi_cpm_bufs_start()
92 iowrite32be(mspi->tx_dma + xfer_ofs, &tx_bd->cbd_bufaddr); in fsl_spi_cpm_bufs_start()
101 int fsl_spi_cpm_bufs(struct mpc8xxx_spi *mspi, in fsl_spi_cpm_bufs() argument
104 struct device *dev = mspi->dev; in fsl_spi_cpm_bufs()
105 struct fsl_spi_reg __iomem *reg_base = mspi->reg_base; in fsl_spi_cpm_bufs()
108 mspi->map_tx_dma = 0; in fsl_spi_cpm_bufs()
109 mspi->map_rx_dma = 0; in fsl_spi_cpm_bufs()
111 mspi->map_tx_dma = 1; in fsl_spi_cpm_bufs()
112 mspi->map_rx_dma = 1; in fsl_spi_cpm_bufs()
116 mspi->tx_dma = mspi->dma_dummy_tx; in fsl_spi_cpm_bufs()
117 mspi->map_tx_dma = 0; in fsl_spi_cpm_bufs()
121 mspi->rx_dma = mspi->dma_dummy_rx; in fsl_spi_cpm_bufs()
122 mspi->map_rx_dma = 0; in fsl_spi_cpm_bufs()
136 mspi->tx = dst; in fsl_spi_cpm_bufs()
137 mspi->map_tx_dma = 1; in fsl_spi_cpm_bufs()
140 if (mspi->map_tx_dma) { in fsl_spi_cpm_bufs()
141 void *nonconst_tx = (void *)mspi->tx; /* shut up gcc */ in fsl_spi_cpm_bufs()
143 mspi->tx_dma = dma_map_single(dev, nonconst_tx, t->len, in fsl_spi_cpm_bufs()
145 if (dma_mapping_error(dev, mspi->tx_dma)) { in fsl_spi_cpm_bufs()
150 mspi->tx_dma = t->tx_dma; in fsl_spi_cpm_bufs()
153 if (mspi->map_rx_dma) { in fsl_spi_cpm_bufs()
154 mspi->rx_dma = dma_map_single(dev, mspi->rx, t->len, in fsl_spi_cpm_bufs()
156 if (dma_mapping_error(dev, mspi->rx_dma)) { in fsl_spi_cpm_bufs()
161 mspi->rx_dma = t->rx_dma; in fsl_spi_cpm_bufs()
167 mspi->xfer_in_progress = t; in fsl_spi_cpm_bufs()
168 mspi->count = t->len; in fsl_spi_cpm_bufs()
171 fsl_spi_cpm_bufs_start(mspi); in fsl_spi_cpm_bufs()
176 if (mspi->map_tx_dma) in fsl_spi_cpm_bufs()
177 dma_unmap_single(dev, mspi->tx_dma, t->len, DMA_TO_DEVICE); in fsl_spi_cpm_bufs()
182 void fsl_spi_cpm_bufs_complete(struct mpc8xxx_spi *mspi) in fsl_spi_cpm_bufs_complete() argument
184 struct device *dev = mspi->dev; in fsl_spi_cpm_bufs_complete()
185 struct spi_transfer *t = mspi->xfer_in_progress; in fsl_spi_cpm_bufs_complete()
187 if (mspi->map_tx_dma) in fsl_spi_cpm_bufs_complete()
188 dma_unmap_single(dev, mspi->tx_dma, t->len, DMA_TO_DEVICE); in fsl_spi_cpm_bufs_complete()
189 if (mspi->map_rx_dma) in fsl_spi_cpm_bufs_complete()
190 dma_unmap_single(dev, mspi->rx_dma, t->len, DMA_FROM_DEVICE); in fsl_spi_cpm_bufs_complete()
191 mspi->xfer_in_progress = NULL; in fsl_spi_cpm_bufs_complete()
202 void fsl_spi_cpm_irq(struct mpc8xxx_spi *mspi, u32 events) in fsl_spi_cpm_irq() argument
205 struct fsl_spi_reg __iomem *reg_base = mspi->reg_base; in fsl_spi_cpm_irq()
207 dev_dbg(mspi->dev, "%s: bd datlen %d, count %d\n", __func__, in fsl_spi_cpm_irq()
208 ioread16be(&mspi->rx_bd->cbd_datlen), mspi->count); in fsl_spi_cpm_irq()
210 len = ioread16be(&mspi->rx_bd->cbd_datlen); in fsl_spi_cpm_irq()
211 if (len > mspi->count) { in fsl_spi_cpm_irq()
213 len = mspi->count; in fsl_spi_cpm_irq()
219 mspi->count -= len; in fsl_spi_cpm_irq()
220 if (mspi->count) in fsl_spi_cpm_irq()
221 fsl_spi_cpm_bufs_start(mspi); in fsl_spi_cpm_irq()
223 complete(&mspi->done); in fsl_spi_cpm_irq()
261 static unsigned long fsl_spi_cpm_get_pram(struct mpc8xxx_spi *mspi) in fsl_spi_cpm_get_pram() argument
263 struct device *dev = mspi->dev; in fsl_spi_cpm_get_pram()
274 if (mspi->flags & SPI_QE && iprop && size == sizeof(*iprop) * 4) in fsl_spi_cpm_get_pram()
278 if (mspi->flags & SPI_QE) { in fsl_spi_cpm_get_pram()
280 qe_issue_cmd(QE_ASSIGN_PAGE_TO_DEVICE, mspi->subblock, in fsl_spi_cpm_get_pram()
289 if (mspi->flags & SPI_CPM2) { in fsl_spi_cpm_get_pram()
298 int fsl_spi_cpm_init(struct mpc8xxx_spi *mspi) in fsl_spi_cpm_init() argument
300 struct device *dev = mspi->dev; in fsl_spi_cpm_init()
306 if (!(mspi->flags & SPI_CPM_MODE)) in fsl_spi_cpm_init()
312 if (mspi->flags & SPI_QE) { in fsl_spi_cpm_init()
315 mspi->subblock = *iprop; in fsl_spi_cpm_init()
317 switch (mspi->subblock) { in fsl_spi_cpm_init()
322 mspi->subblock = QE_CR_SUBBLOCK_SPI1; in fsl_spi_cpm_init()
325 mspi->subblock = QE_CR_SUBBLOCK_SPI2; in fsl_spi_cpm_init()
330 if (mspi->flags & SPI_CPM1) { in fsl_spi_cpm_init()
336 mspi->pram = NULL; in fsl_spi_cpm_init()
338 mspi->pram = pram; in fsl_spi_cpm_init()
340 unsigned long pram_ofs = fsl_spi_cpm_get_pram(mspi); in fsl_spi_cpm_init()
343 mspi->pram = NULL; in fsl_spi_cpm_init()
345 mspi->pram = cpm_muram_addr(pram_ofs); in fsl_spi_cpm_init()
347 if (mspi->pram == NULL) { in fsl_spi_cpm_init()
352 bds_ofs = cpm_muram_alloc(sizeof(*mspi->tx_bd) + in fsl_spi_cpm_init()
353 sizeof(*mspi->rx_bd), 8); in fsl_spi_cpm_init()
359 mspi->dma_dummy_tx = dma_map_single(dev, ZERO_PAGE(0), PAGE_SIZE, in fsl_spi_cpm_init()
361 if (dma_mapping_error(dev, mspi->dma_dummy_tx)) { in fsl_spi_cpm_init()
366 mspi->dma_dummy_rx = dma_map_single(dev, fsl_dummy_rx, SPI_MRBLR, in fsl_spi_cpm_init()
368 if (dma_mapping_error(dev, mspi->dma_dummy_rx)) { in fsl_spi_cpm_init()
373 mspi->tx_bd = cpm_muram_addr(bds_ofs); in fsl_spi_cpm_init()
374 mspi->rx_bd = cpm_muram_addr(bds_ofs + sizeof(*mspi->tx_bd)); in fsl_spi_cpm_init()
377 iowrite16be(cpm_muram_offset(mspi->tx_bd), &mspi->pram->tbase); in fsl_spi_cpm_init()
378 iowrite16be(cpm_muram_offset(mspi->rx_bd), &mspi->pram->rbase); in fsl_spi_cpm_init()
379 iowrite8(CPMFCR_EB | CPMFCR_GBL, &mspi->pram->tfcr); in fsl_spi_cpm_init()
380 iowrite8(CPMFCR_EB | CPMFCR_GBL, &mspi->pram->rfcr); in fsl_spi_cpm_init()
381 iowrite16be(SPI_MRBLR, &mspi->pram->mrblr); in fsl_spi_cpm_init()
382 iowrite32be(0, &mspi->pram->rstate); in fsl_spi_cpm_init()
383 iowrite32be(0, &mspi->pram->rdp); in fsl_spi_cpm_init()
384 iowrite16be(0, &mspi->pram->rbptr); in fsl_spi_cpm_init()
385 iowrite16be(0, &mspi->pram->rbc); in fsl_spi_cpm_init()
386 iowrite32be(0, &mspi->pram->rxtmp); in fsl_spi_cpm_init()
387 iowrite32be(0, &mspi->pram->tstate); in fsl_spi_cpm_init()
388 iowrite32be(0, &mspi->pram->tdp); in fsl_spi_cpm_init()
389 iowrite16be(0, &mspi->pram->tbptr); in fsl_spi_cpm_init()
390 iowrite16be(0, &mspi->pram->tbc); in fsl_spi_cpm_init()
391 iowrite32be(0, &mspi->pram->txtmp); in fsl_spi_cpm_init()
396 dma_unmap_single(dev, mspi->dma_dummy_tx, PAGE_SIZE, DMA_TO_DEVICE); in fsl_spi_cpm_init()
400 if (!(mspi->flags & SPI_CPM1)) in fsl_spi_cpm_init()
401 cpm_muram_free(cpm_muram_offset(mspi->pram)); in fsl_spi_cpm_init()
408 void fsl_spi_cpm_free(struct mpc8xxx_spi *mspi) in fsl_spi_cpm_free() argument
410 struct device *dev = mspi->dev; in fsl_spi_cpm_free()
412 if (!(mspi->flags & SPI_CPM_MODE)) in fsl_spi_cpm_free()
415 dma_unmap_single(dev, mspi->dma_dummy_rx, SPI_MRBLR, DMA_FROM_DEVICE); in fsl_spi_cpm_free()
416 dma_unmap_single(dev, mspi->dma_dummy_tx, PAGE_SIZE, DMA_TO_DEVICE); in fsl_spi_cpm_free()
417 cpm_muram_free(cpm_muram_offset(mspi->tx_bd)); in fsl_spi_cpm_free()
418 if (!(mspi->flags & SPI_CPM1)) in fsl_spi_cpm_free()
419 cpm_muram_free(cpm_muram_offset(mspi->pram)); in fsl_spi_cpm_free()