On 06/30/2015 12:46 PM, Bjorn Andersson wrote:
> +
> +int __qcom_scm_pas_init_image(u32 peripheral, const void *metadata, size_t
> size)
> +{
> + dma_addr_t mdata_phys;
> + void *mdata_buf;
> + u32 scm_ret;
> + int ret;
> + struct pas_init_image_req {
> + u32 proc;
> + u32 image_addr;
Please mark these as __le32 and do the appropriate conversions to little
endian. Also consider removing the struct name and just make it
anonymous, i.e.
struct {
__le32 proc;
__le32 image_addr;
} cmd;
> + } request;
> +
> + /*
> + * During the scm call memory protection will be enabled for the meta
> + * data blob, so make sure it's physically contiguous, 4K aligned and
> + * non-cachable to avoid XPU violations.
> + */
> + mdata_buf = dma_alloc_coherent(NULL, size, &mdata_phys, GFP_KERNEL);
> + if (!mdata_buf) {
> + pr_err("Allocation of metadata buffer failed.\n");
> + return -ENOMEM;
> + }
> + memcpy(mdata_buf, metadata, size);
> +
> + request.proc = peripheral;
> + request.image_addr = mdata_phys;
> +
> + ret = qcom_scm_call(QCOM_SCM_SVC_PIL, QCOM_SCM_PAS_INIT_IMAGE_CMD,
> + &request, sizeof(request),
> + &scm_ret, sizeof(scm_ret));
> +
> + dma_free_coherent(NULL, size, mdata_buf, mdata_phys);
> +
> + return ret ? : scm_ret;
> +}
> +
> +int __qcom_scm_pas_mem_setup(u32 peripheral, phys_addr_t addr, phys_addr_t
> size)
> +{
> + u32 scm_ret;
> + int ret;
> + struct pas_init_image_req {
> + u32 proc;
> + u32 addr;
> + u32 len;
> + } request;
Same comment here.
> +
> + request.proc = peripheral;
> + request.addr = addr;
> + request.len = size;
> +
> + ret = qcom_scm_call(QCOM_SCM_SVC_PIL, QCOM_SCM_PAS_MEM_SETUP_CMD,
> + &request, sizeof(request),
> + &scm_ret, sizeof(scm_ret));
> +
> + return ret ? : scm_ret;
> +}
> +
>
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