Am Mittwoch, den 14.10.2015, 15:39 +0200 schrieb Steffen Trumtrar:
> Add the i.MX6 crypto core CAAM.
>
> The core itself works with jobrings in which descriptors can be
> queued/dequeued for processing.
>
> Signed-off-by: Steffen Trumtrar <s.trumtrar@xxxxxxxxxxxxxx>
> ---
>
[...]
> +/*
> + * Init JobR independent of platform property detection
> + */
> +static int caam_jr_init(struct device_d *dev)
> +{
> + struct caam_drv_private_jr *jrp;
> + int i, error;
> +
> + jrp = dev->priv;
> +
> + error = caam_reset_hw_jr(dev);
> + if (error)
> + return -EINVAL;
> +
> + error = -ENOMEM;
> + jrp->inpring = dma_alloc_coherent(sizeof(*jrp->inpring) * JOBR_DEPTH,
> + DMA_ADDRESS_BROKEN);
> + if (!jrp->inpring)
> + return error;
> +
> + jrp->outring = dma_alloc_coherent(sizeof(*jrp->outring) *
> + JOBR_DEPTH, DMA_ADDRESS_BROKEN);
> + if (!jrp->outring)
> + goto out_free_inpring;
No new code with DMA_ADDRESS_BROKEN please.
> +
> + jrp->entinfo = xzalloc(sizeof(*jrp->entinfo) * JOBR_DEPTH);
> + if (!jrp->entinfo)
> + goto out_free_outring;
> +
> + for (i = 0; i < JOBR_DEPTH; i++)
> + jrp->entinfo[i].desc_addr_dma = !0;
> +
> + /* Setup rings */
> + jrp->inp_ring_write_index = 0;
> + jrp->out_ring_read_index = 0;
> + jrp->head = 0;
> + jrp->tail = 0;
> +
> + wr_reg64(&jrp->rregs->inpring_base, (dma_addr_t) jrp->inpring);
> + wr_reg64(&jrp->rregs->outring_base, (dma_addr_t) jrp->outring);
This should use the real DMA address, provided by dma_alloc_coherent
above. Hint: it also gets rid of the cast. ;)
> + wr_reg32(&jrp->rregs->inpring_size, JOBR_DEPTH);
> + wr_reg32(&jrp->rregs->outring_size, JOBR_DEPTH);
> +
> + jrp->ringsize = JOBR_DEPTH;
> +
> + return 0;
> +
> +out_free_outring:
> + dma_free_coherent(jrp->outring, 0, sizeof(struct jr_outentry) * JOBR_DEPTH);
> +out_free_inpring:
> + dma_free_coherent(jrp->inpring, 0, sizeof(dma_addr_t) * JOBR_DEPTH);
> + dev_err(dev, "can't allocate job rings for %d\n", jrp->ridx);
> + return error;
> +}
> +
[...]
Regards,
Lucas
--
Pengutronix e.K. | Lucas Stach |
Industrial Linux Solutions | http://www.pengutronix.de/ |
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