Lines Matching refs:mspi
51 void fsl_spi_cpm_reinit_txrx(struct mpc8xxx_spi *mspi) in fsl_spi_cpm_reinit_txrx() argument
53 if (mspi->flags & SPI_QE) { in fsl_spi_cpm_reinit_txrx()
54 qe_issue_cmd(QE_INIT_TX_RX, mspi->subblock, in fsl_spi_cpm_reinit_txrx()
57 if (mspi->flags & SPI_CPM1) { in fsl_spi_cpm_reinit_txrx()
58 out_be32(&mspi->pram->rstate, 0); in fsl_spi_cpm_reinit_txrx()
59 out_be16(&mspi->pram->rbptr, in fsl_spi_cpm_reinit_txrx()
60 in_be16(&mspi->pram->rbase)); in fsl_spi_cpm_reinit_txrx()
61 out_be32(&mspi->pram->tstate, 0); in fsl_spi_cpm_reinit_txrx()
62 out_be16(&mspi->pram->tbptr, in fsl_spi_cpm_reinit_txrx()
63 in_be16(&mspi->pram->tbase)); in fsl_spi_cpm_reinit_txrx()
71 static void fsl_spi_cpm_bufs_start(struct mpc8xxx_spi *mspi) in fsl_spi_cpm_bufs_start() argument
73 struct cpm_buf_desc __iomem *tx_bd = mspi->tx_bd; in fsl_spi_cpm_bufs_start()
74 struct cpm_buf_desc __iomem *rx_bd = mspi->rx_bd; in fsl_spi_cpm_bufs_start()
75 unsigned int xfer_len = min(mspi->count, SPI_MRBLR); in fsl_spi_cpm_bufs_start()
77 struct fsl_spi_reg *reg_base = mspi->reg_base; in fsl_spi_cpm_bufs_start()
79 xfer_ofs = mspi->xfer_in_progress->len - mspi->count; in fsl_spi_cpm_bufs_start()
81 if (mspi->rx_dma == mspi->dma_dummy_rx) in fsl_spi_cpm_bufs_start()
82 out_be32(&rx_bd->cbd_bufaddr, mspi->rx_dma); in fsl_spi_cpm_bufs_start()
84 out_be32(&rx_bd->cbd_bufaddr, mspi->rx_dma + xfer_ofs); in fsl_spi_cpm_bufs_start()
88 if (mspi->tx_dma == mspi->dma_dummy_tx) in fsl_spi_cpm_bufs_start()
89 out_be32(&tx_bd->cbd_bufaddr, mspi->tx_dma); in fsl_spi_cpm_bufs_start()
91 out_be32(&tx_bd->cbd_bufaddr, mspi->tx_dma + xfer_ofs); in fsl_spi_cpm_bufs_start()
100 int fsl_spi_cpm_bufs(struct mpc8xxx_spi *mspi, in fsl_spi_cpm_bufs() argument
103 struct device *dev = mspi->dev; in fsl_spi_cpm_bufs()
104 struct fsl_spi_reg *reg_base = mspi->reg_base; in fsl_spi_cpm_bufs()
107 mspi->map_tx_dma = 0; in fsl_spi_cpm_bufs()
108 mspi->map_rx_dma = 0; in fsl_spi_cpm_bufs()
110 mspi->map_tx_dma = 1; in fsl_spi_cpm_bufs()
111 mspi->map_rx_dma = 1; in fsl_spi_cpm_bufs()
115 mspi->tx_dma = mspi->dma_dummy_tx; in fsl_spi_cpm_bufs()
116 mspi->map_tx_dma = 0; in fsl_spi_cpm_bufs()
120 mspi->rx_dma = mspi->dma_dummy_rx; in fsl_spi_cpm_bufs()
121 mspi->map_rx_dma = 0; in fsl_spi_cpm_bufs()
124 if (mspi->map_tx_dma) { in fsl_spi_cpm_bufs()
125 void *nonconst_tx = (void *)mspi->tx; /* shut up gcc */ in fsl_spi_cpm_bufs()
127 mspi->tx_dma = dma_map_single(dev, nonconst_tx, t->len, in fsl_spi_cpm_bufs()
129 if (dma_mapping_error(dev, mspi->tx_dma)) { in fsl_spi_cpm_bufs()
134 mspi->tx_dma = t->tx_dma; in fsl_spi_cpm_bufs()
137 if (mspi->map_rx_dma) { in fsl_spi_cpm_bufs()
138 mspi->rx_dma = dma_map_single(dev, mspi->rx, t->len, in fsl_spi_cpm_bufs()
140 if (dma_mapping_error(dev, mspi->rx_dma)) { in fsl_spi_cpm_bufs()
145 mspi->rx_dma = t->rx_dma; in fsl_spi_cpm_bufs()
151 mspi->xfer_in_progress = t; in fsl_spi_cpm_bufs()
152 mspi->count = t->len; in fsl_spi_cpm_bufs()
155 fsl_spi_cpm_bufs_start(mspi); in fsl_spi_cpm_bufs()
160 if (mspi->map_tx_dma) in fsl_spi_cpm_bufs()
161 dma_unmap_single(dev, mspi->tx_dma, t->len, DMA_TO_DEVICE); in fsl_spi_cpm_bufs()
166 void fsl_spi_cpm_bufs_complete(struct mpc8xxx_spi *mspi) in fsl_spi_cpm_bufs_complete() argument
168 struct device *dev = mspi->dev; in fsl_spi_cpm_bufs_complete()
169 struct spi_transfer *t = mspi->xfer_in_progress; in fsl_spi_cpm_bufs_complete()
171 if (mspi->map_tx_dma) in fsl_spi_cpm_bufs_complete()
172 dma_unmap_single(dev, mspi->tx_dma, t->len, DMA_TO_DEVICE); in fsl_spi_cpm_bufs_complete()
173 if (mspi->map_rx_dma) in fsl_spi_cpm_bufs_complete()
174 dma_unmap_single(dev, mspi->rx_dma, t->len, DMA_FROM_DEVICE); in fsl_spi_cpm_bufs_complete()
175 mspi->xfer_in_progress = NULL; in fsl_spi_cpm_bufs_complete()
179 void fsl_spi_cpm_irq(struct mpc8xxx_spi *mspi, u32 events) in fsl_spi_cpm_irq() argument
182 struct fsl_spi_reg *reg_base = mspi->reg_base; in fsl_spi_cpm_irq()
184 dev_dbg(mspi->dev, "%s: bd datlen %d, count %d\n", __func__, in fsl_spi_cpm_irq()
185 in_be16(&mspi->rx_bd->cbd_datlen), mspi->count); in fsl_spi_cpm_irq()
187 len = in_be16(&mspi->rx_bd->cbd_datlen); in fsl_spi_cpm_irq()
188 if (len > mspi->count) { in fsl_spi_cpm_irq()
190 len = mspi->count; in fsl_spi_cpm_irq()
196 mspi->count -= len; in fsl_spi_cpm_irq()
197 if (mspi->count) in fsl_spi_cpm_irq()
198 fsl_spi_cpm_bufs_start(mspi); in fsl_spi_cpm_irq()
200 complete(&mspi->done); in fsl_spi_cpm_irq()
238 static unsigned long fsl_spi_cpm_get_pram(struct mpc8xxx_spi *mspi) in fsl_spi_cpm_get_pram() argument
240 struct device *dev = mspi->dev; in fsl_spi_cpm_get_pram()
251 if (mspi->flags & SPI_QE && iprop && size == sizeof(*iprop) * 4) in fsl_spi_cpm_get_pram()
255 if (mspi->flags & SPI_QE) { in fsl_spi_cpm_get_pram()
257 qe_issue_cmd(QE_ASSIGN_PAGE_TO_DEVICE, mspi->subblock, in fsl_spi_cpm_get_pram()
266 if (mspi->flags & SPI_CPM2) { in fsl_spi_cpm_get_pram()
275 int fsl_spi_cpm_init(struct mpc8xxx_spi *mspi) in fsl_spi_cpm_init() argument
277 struct device *dev = mspi->dev; in fsl_spi_cpm_init()
283 if (!(mspi->flags & SPI_CPM_MODE)) in fsl_spi_cpm_init()
289 if (mspi->flags & SPI_QE) { in fsl_spi_cpm_init()
292 mspi->subblock = *iprop; in fsl_spi_cpm_init()
294 switch (mspi->subblock) { in fsl_spi_cpm_init()
299 mspi->subblock = QE_CR_SUBBLOCK_SPI1; in fsl_spi_cpm_init()
302 mspi->subblock = QE_CR_SUBBLOCK_SPI2; in fsl_spi_cpm_init()
307 if (mspi->flags & SPI_CPM1) { in fsl_spi_cpm_init()
313 mspi->pram = NULL; in fsl_spi_cpm_init()
315 mspi->pram = pram; in fsl_spi_cpm_init()
317 unsigned long pram_ofs = fsl_spi_cpm_get_pram(mspi); in fsl_spi_cpm_init()
320 mspi->pram = NULL; in fsl_spi_cpm_init()
322 mspi->pram = cpm_muram_addr(pram_ofs); in fsl_spi_cpm_init()
324 if (mspi->pram == NULL) { in fsl_spi_cpm_init()
329 bds_ofs = cpm_muram_alloc(sizeof(*mspi->tx_bd) + in fsl_spi_cpm_init()
330 sizeof(*mspi->rx_bd), 8); in fsl_spi_cpm_init()
336 mspi->dma_dummy_tx = dma_map_single(dev, empty_zero_page, PAGE_SIZE, in fsl_spi_cpm_init()
338 if (dma_mapping_error(dev, mspi->dma_dummy_tx)) { in fsl_spi_cpm_init()
343 mspi->dma_dummy_rx = dma_map_single(dev, fsl_dummy_rx, SPI_MRBLR, in fsl_spi_cpm_init()
345 if (dma_mapping_error(dev, mspi->dma_dummy_rx)) { in fsl_spi_cpm_init()
350 mspi->tx_bd = cpm_muram_addr(bds_ofs); in fsl_spi_cpm_init()
351 mspi->rx_bd = cpm_muram_addr(bds_ofs + sizeof(*mspi->tx_bd)); in fsl_spi_cpm_init()
354 out_be16(&mspi->pram->tbase, cpm_muram_offset(mspi->tx_bd)); in fsl_spi_cpm_init()
355 out_be16(&mspi->pram->rbase, cpm_muram_offset(mspi->rx_bd)); in fsl_spi_cpm_init()
356 out_8(&mspi->pram->tfcr, CPMFCR_EB | CPMFCR_GBL); in fsl_spi_cpm_init()
357 out_8(&mspi->pram->rfcr, CPMFCR_EB | CPMFCR_GBL); in fsl_spi_cpm_init()
358 out_be16(&mspi->pram->mrblr, SPI_MRBLR); in fsl_spi_cpm_init()
359 out_be32(&mspi->pram->rstate, 0); in fsl_spi_cpm_init()
360 out_be32(&mspi->pram->rdp, 0); in fsl_spi_cpm_init()
361 out_be16(&mspi->pram->rbptr, 0); in fsl_spi_cpm_init()
362 out_be16(&mspi->pram->rbc, 0); in fsl_spi_cpm_init()
363 out_be32(&mspi->pram->rxtmp, 0); in fsl_spi_cpm_init()
364 out_be32(&mspi->pram->tstate, 0); in fsl_spi_cpm_init()
365 out_be32(&mspi->pram->tdp, 0); in fsl_spi_cpm_init()
366 out_be16(&mspi->pram->tbptr, 0); in fsl_spi_cpm_init()
367 out_be16(&mspi->pram->tbc, 0); in fsl_spi_cpm_init()
368 out_be32(&mspi->pram->txtmp, 0); in fsl_spi_cpm_init()
373 dma_unmap_single(dev, mspi->dma_dummy_tx, PAGE_SIZE, DMA_TO_DEVICE); in fsl_spi_cpm_init()
377 if (!(mspi->flags & SPI_CPM1)) in fsl_spi_cpm_init()
378 cpm_muram_free(cpm_muram_offset(mspi->pram)); in fsl_spi_cpm_init()
385 void fsl_spi_cpm_free(struct mpc8xxx_spi *mspi) in fsl_spi_cpm_free() argument
387 struct device *dev = mspi->dev; in fsl_spi_cpm_free()
389 if (!(mspi->flags & SPI_CPM_MODE)) in fsl_spi_cpm_free()
392 dma_unmap_single(dev, mspi->dma_dummy_rx, SPI_MRBLR, DMA_FROM_DEVICE); in fsl_spi_cpm_free()
393 dma_unmap_single(dev, mspi->dma_dummy_tx, PAGE_SIZE, DMA_TO_DEVICE); in fsl_spi_cpm_free()
394 cpm_muram_free(cpm_muram_offset(mspi->tx_bd)); in fsl_spi_cpm_free()
395 if (!(mspi->flags & SPI_CPM1)) in fsl_spi_cpm_free()
396 cpm_muram_free(cpm_muram_offset(mspi->pram)); in fsl_spi_cpm_free()