Lines Matching refs:mspi
55 void fsl_spi_cpm_reinit_txrx(struct mpc8xxx_spi *mspi) in fsl_spi_cpm_reinit_txrx() argument
57 if (mspi->flags & SPI_QE) { in fsl_spi_cpm_reinit_txrx()
58 qe_issue_cmd(QE_INIT_TX_RX, mspi->subblock, in fsl_spi_cpm_reinit_txrx()
61 if (mspi->flags & SPI_CPM1) { in fsl_spi_cpm_reinit_txrx()
62 out_be32(&mspi->pram->rstate, 0); in fsl_spi_cpm_reinit_txrx()
63 out_be16(&mspi->pram->rbptr, in fsl_spi_cpm_reinit_txrx()
64 in_be16(&mspi->pram->rbase)); in fsl_spi_cpm_reinit_txrx()
65 out_be32(&mspi->pram->tstate, 0); in fsl_spi_cpm_reinit_txrx()
66 out_be16(&mspi->pram->tbptr, in fsl_spi_cpm_reinit_txrx()
67 in_be16(&mspi->pram->tbase)); in fsl_spi_cpm_reinit_txrx()
75 static void fsl_spi_cpm_bufs_start(struct mpc8xxx_spi *mspi) in fsl_spi_cpm_bufs_start() argument
77 struct cpm_buf_desc __iomem *tx_bd = mspi->tx_bd; in fsl_spi_cpm_bufs_start()
78 struct cpm_buf_desc __iomem *rx_bd = mspi->rx_bd; in fsl_spi_cpm_bufs_start()
79 unsigned int xfer_len = min(mspi->count, SPI_MRBLR); in fsl_spi_cpm_bufs_start()
81 struct fsl_spi_reg *reg_base = mspi->reg_base; in fsl_spi_cpm_bufs_start()
83 xfer_ofs = mspi->xfer_in_progress->len - mspi->count; in fsl_spi_cpm_bufs_start()
85 if (mspi->rx_dma == mspi->dma_dummy_rx) in fsl_spi_cpm_bufs_start()
86 out_be32(&rx_bd->cbd_bufaddr, mspi->rx_dma); in fsl_spi_cpm_bufs_start()
88 out_be32(&rx_bd->cbd_bufaddr, mspi->rx_dma + xfer_ofs); in fsl_spi_cpm_bufs_start()
92 if (mspi->tx_dma == mspi->dma_dummy_tx) in fsl_spi_cpm_bufs_start()
93 out_be32(&tx_bd->cbd_bufaddr, mspi->tx_dma); in fsl_spi_cpm_bufs_start()
95 out_be32(&tx_bd->cbd_bufaddr, mspi->tx_dma + xfer_ofs); in fsl_spi_cpm_bufs_start()
104 int fsl_spi_cpm_bufs(struct mpc8xxx_spi *mspi, in fsl_spi_cpm_bufs() argument
107 struct device *dev = mspi->dev; in fsl_spi_cpm_bufs()
108 struct fsl_spi_reg *reg_base = mspi->reg_base; in fsl_spi_cpm_bufs()
111 mspi->map_tx_dma = 0; in fsl_spi_cpm_bufs()
112 mspi->map_rx_dma = 0; in fsl_spi_cpm_bufs()
114 mspi->map_tx_dma = 1; in fsl_spi_cpm_bufs()
115 mspi->map_rx_dma = 1; in fsl_spi_cpm_bufs()
119 mspi->tx_dma = mspi->dma_dummy_tx; in fsl_spi_cpm_bufs()
120 mspi->map_tx_dma = 0; in fsl_spi_cpm_bufs()
124 mspi->rx_dma = mspi->dma_dummy_rx; in fsl_spi_cpm_bufs()
125 mspi->map_rx_dma = 0; in fsl_spi_cpm_bufs()
128 if (mspi->map_tx_dma) { in fsl_spi_cpm_bufs()
129 void *nonconst_tx = (void *)mspi->tx; /* shut up gcc */ in fsl_spi_cpm_bufs()
131 mspi->tx_dma = dma_map_single(dev, nonconst_tx, t->len, in fsl_spi_cpm_bufs()
133 if (dma_mapping_error(dev, mspi->tx_dma)) { in fsl_spi_cpm_bufs()
138 mspi->tx_dma = t->tx_dma; in fsl_spi_cpm_bufs()
141 if (mspi->map_rx_dma) { in fsl_spi_cpm_bufs()
142 mspi->rx_dma = dma_map_single(dev, mspi->rx, t->len, in fsl_spi_cpm_bufs()
144 if (dma_mapping_error(dev, mspi->rx_dma)) { in fsl_spi_cpm_bufs()
149 mspi->rx_dma = t->rx_dma; in fsl_spi_cpm_bufs()
155 mspi->xfer_in_progress = t; in fsl_spi_cpm_bufs()
156 mspi->count = t->len; in fsl_spi_cpm_bufs()
159 fsl_spi_cpm_bufs_start(mspi); in fsl_spi_cpm_bufs()
164 if (mspi->map_tx_dma) in fsl_spi_cpm_bufs()
165 dma_unmap_single(dev, mspi->tx_dma, t->len, DMA_TO_DEVICE); in fsl_spi_cpm_bufs()
170 void fsl_spi_cpm_bufs_complete(struct mpc8xxx_spi *mspi) in fsl_spi_cpm_bufs_complete() argument
172 struct device *dev = mspi->dev; in fsl_spi_cpm_bufs_complete()
173 struct spi_transfer *t = mspi->xfer_in_progress; in fsl_spi_cpm_bufs_complete()
175 if (mspi->map_tx_dma) in fsl_spi_cpm_bufs_complete()
176 dma_unmap_single(dev, mspi->tx_dma, t->len, DMA_TO_DEVICE); in fsl_spi_cpm_bufs_complete()
177 if (mspi->map_rx_dma) in fsl_spi_cpm_bufs_complete()
178 dma_unmap_single(dev, mspi->rx_dma, t->len, DMA_FROM_DEVICE); in fsl_spi_cpm_bufs_complete()
179 mspi->xfer_in_progress = NULL; in fsl_spi_cpm_bufs_complete()
183 void fsl_spi_cpm_irq(struct mpc8xxx_spi *mspi, u32 events) in fsl_spi_cpm_irq() argument
186 struct fsl_spi_reg *reg_base = mspi->reg_base; in fsl_spi_cpm_irq()
188 dev_dbg(mspi->dev, "%s: bd datlen %d, count %d\n", __func__, in fsl_spi_cpm_irq()
189 in_be16(&mspi->rx_bd->cbd_datlen), mspi->count); in fsl_spi_cpm_irq()
191 len = in_be16(&mspi->rx_bd->cbd_datlen); in fsl_spi_cpm_irq()
192 if (len > mspi->count) { in fsl_spi_cpm_irq()
194 len = mspi->count; in fsl_spi_cpm_irq()
200 mspi->count -= len; in fsl_spi_cpm_irq()
201 if (mspi->count) in fsl_spi_cpm_irq()
202 fsl_spi_cpm_bufs_start(mspi); in fsl_spi_cpm_irq()
204 complete(&mspi->done); in fsl_spi_cpm_irq()
242 static unsigned long fsl_spi_cpm_get_pram(struct mpc8xxx_spi *mspi) in fsl_spi_cpm_get_pram() argument
244 struct device *dev = mspi->dev; in fsl_spi_cpm_get_pram()
255 if (mspi->flags & SPI_QE && iprop && size == sizeof(*iprop) * 4) in fsl_spi_cpm_get_pram()
259 if (mspi->flags & SPI_QE) { in fsl_spi_cpm_get_pram()
261 qe_issue_cmd(QE_ASSIGN_PAGE_TO_DEVICE, mspi->subblock, in fsl_spi_cpm_get_pram()
270 if (mspi->flags & SPI_CPM2) { in fsl_spi_cpm_get_pram()
279 int fsl_spi_cpm_init(struct mpc8xxx_spi *mspi) in fsl_spi_cpm_init() argument
281 struct device *dev = mspi->dev; in fsl_spi_cpm_init()
287 if (!(mspi->flags & SPI_CPM_MODE)) in fsl_spi_cpm_init()
293 if (mspi->flags & SPI_QE) { in fsl_spi_cpm_init()
296 mspi->subblock = *iprop; in fsl_spi_cpm_init()
298 switch (mspi->subblock) { in fsl_spi_cpm_init()
303 mspi->subblock = QE_CR_SUBBLOCK_SPI1; in fsl_spi_cpm_init()
306 mspi->subblock = QE_CR_SUBBLOCK_SPI2; in fsl_spi_cpm_init()
311 if (mspi->flags & SPI_CPM1) { in fsl_spi_cpm_init()
319 mspi->pram = NULL; in fsl_spi_cpm_init()
321 mspi->pram = pram; in fsl_spi_cpm_init()
323 unsigned long pram_ofs = fsl_spi_cpm_get_pram(mspi); in fsl_spi_cpm_init()
326 mspi->pram = NULL; in fsl_spi_cpm_init()
328 mspi->pram = cpm_muram_addr(pram_ofs); in fsl_spi_cpm_init()
330 if (mspi->pram == NULL) { in fsl_spi_cpm_init()
335 bds_ofs = cpm_muram_alloc(sizeof(*mspi->tx_bd) + in fsl_spi_cpm_init()
336 sizeof(*mspi->rx_bd), 8); in fsl_spi_cpm_init()
342 mspi->dma_dummy_tx = dma_map_single(dev, empty_zero_page, PAGE_SIZE, in fsl_spi_cpm_init()
344 if (dma_mapping_error(dev, mspi->dma_dummy_tx)) { in fsl_spi_cpm_init()
349 mspi->dma_dummy_rx = dma_map_single(dev, fsl_dummy_rx, SPI_MRBLR, in fsl_spi_cpm_init()
351 if (dma_mapping_error(dev, mspi->dma_dummy_rx)) { in fsl_spi_cpm_init()
356 mspi->tx_bd = cpm_muram_addr(bds_ofs); in fsl_spi_cpm_init()
357 mspi->rx_bd = cpm_muram_addr(bds_ofs + sizeof(*mspi->tx_bd)); in fsl_spi_cpm_init()
360 out_be16(&mspi->pram->tbase, cpm_muram_offset(mspi->tx_bd)); in fsl_spi_cpm_init()
361 out_be16(&mspi->pram->rbase, cpm_muram_offset(mspi->rx_bd)); in fsl_spi_cpm_init()
362 out_8(&mspi->pram->tfcr, CPMFCR_EB | CPMFCR_GBL); in fsl_spi_cpm_init()
363 out_8(&mspi->pram->rfcr, CPMFCR_EB | CPMFCR_GBL); in fsl_spi_cpm_init()
364 out_be16(&mspi->pram->mrblr, SPI_MRBLR); in fsl_spi_cpm_init()
365 out_be32(&mspi->pram->rstate, 0); in fsl_spi_cpm_init()
366 out_be32(&mspi->pram->rdp, 0); in fsl_spi_cpm_init()
367 out_be16(&mspi->pram->rbptr, 0); in fsl_spi_cpm_init()
368 out_be16(&mspi->pram->rbc, 0); in fsl_spi_cpm_init()
369 out_be32(&mspi->pram->rxtmp, 0); in fsl_spi_cpm_init()
370 out_be32(&mspi->pram->tstate, 0); in fsl_spi_cpm_init()
371 out_be32(&mspi->pram->tdp, 0); in fsl_spi_cpm_init()
372 out_be16(&mspi->pram->tbptr, 0); in fsl_spi_cpm_init()
373 out_be16(&mspi->pram->tbc, 0); in fsl_spi_cpm_init()
374 out_be32(&mspi->pram->txtmp, 0); in fsl_spi_cpm_init()
379 dma_unmap_single(dev, mspi->dma_dummy_tx, PAGE_SIZE, DMA_TO_DEVICE); in fsl_spi_cpm_init()
383 if (!(mspi->flags & SPI_CPM1)) in fsl_spi_cpm_init()
384 cpm_muram_free(cpm_muram_offset(mspi->pram)); in fsl_spi_cpm_init()
391 void fsl_spi_cpm_free(struct mpc8xxx_spi *mspi) in fsl_spi_cpm_free() argument
393 struct device *dev = mspi->dev; in fsl_spi_cpm_free()
395 if (!(mspi->flags & SPI_CPM_MODE)) in fsl_spi_cpm_free()
398 dma_unmap_single(dev, mspi->dma_dummy_rx, SPI_MRBLR, DMA_FROM_DEVICE); in fsl_spi_cpm_free()
399 dma_unmap_single(dev, mspi->dma_dummy_tx, PAGE_SIZE, DMA_TO_DEVICE); in fsl_spi_cpm_free()
400 cpm_muram_free(cpm_muram_offset(mspi->tx_bd)); in fsl_spi_cpm_free()
401 cpm_muram_free(cpm_muram_offset(mspi->pram)); in fsl_spi_cpm_free()