Hi Bjorn,
On 01/30/2017 06:55 PM, Bjorn Andersson wrote:
> Pushing the SCM calls into the MDT loader reduces duplication in the
> callers and allows for non-remoteproc clients to use the helper for
> parsing and loading MDT files.
>
> Cc: Andy Gross <andy.gross@xxxxxxxxxx>
> Signed-off-by: Bjorn Andersson <bjorn.andersson@xxxxxxxxxx>
> ---
> drivers/remoteproc/qcom_adsp_pil.c | 29 +-------
> drivers/remoteproc/qcom_mdt_loader.c | 134 +++++++++++++++++++++++------------
> drivers/remoteproc/qcom_mdt_loader.h | 6 +-
> drivers/remoteproc/qcom_q6v5_pil.c | 4 +-
> drivers/remoteproc/qcom_wcnss.c | 29 +-------
> 5 files changed, 100 insertions(+), 102 deletions(-)
>
> /**
> - * qcom_mdt_load() - load the firmware which header is defined in fw
> - * @rproc: rproc handle
> - * @fw: frimware object for the header
> - * @firmware: filename of the firmware, for building .bXX names
> + * qcom_mdt_load() - load the firmware which header is loaded as fw
> + * @dev: device handle to associate resources with
> + * @fw: firmware object for the mdt file
> + * @firmware: name of the firmware, for construction of segment file names
> + * @pas_id: PAS identifier
> + * @mem_region: allocated memory region to load firmware into
> + * @mem_phys: physical address of allocated memory region
> + * @mem_size: size of the allocated memory region
> *
> * Returns 0 on success, negative errno otherwise.
> */
> -int qcom_mdt_load(struct rproc *rproc,
> - const struct firmware *fw,
> - const char *firmware)
> +int qcom_mdt_load(struct device *dev, const struct firmware *fw,
> + const char *firmware, int pas_id, void *mem_region,
> + phys_addr_t mem_phys, size_t mem_size)
> {
> const struct elf32_phdr *phdrs;
> const struct elf32_phdr *phdr;
> const struct elf32_hdr *ehdr;
> const struct firmware *seg_fw;
> + phys_addr_t mem_reloc;
> + phys_addr_t min_addr = (phys_addr_t)ULLONG_MAX;
> + phys_addr_t max_addr = 0;
> size_t fw_name_len;
> + size_t offset;
> char *fw_name;
> + bool relocate = false;
> void *ptr;
> int ret;
> int i;
>
> + if (!fw || !mem_region || !mem_phys || !mem_size)
> + return -EINVAL;
> +
> ehdr = (struct elf32_hdr *)fw->data;
> phdrs = (struct elf32_phdr *)(ehdr + 1);
>
> @@ -134,31 +140,68 @@ int qcom_mdt_load(struct rproc *rproc,
> if (!fw_name)
> return -ENOMEM;
>
> + ret = qcom_scm_pas_init_image(pas_id, fw->data, fw->size);
> + if (ret) {
> + dev_err(dev, "invalid firmware metadata\n");
> + goto out;
> + }
> +
> for (i = 0; i < ehdr->e_phnum; i++) {
> phdr = &phdrs[i];
>
> - if (phdr->p_type != PT_LOAD)
> + if (!mdt_phdr_valid(phdr))
> continue;
>
> - if ((phdr->p_flags & QCOM_MDT_TYPE_MASK) == QCOM_MDT_TYPE_HASH)
> - continue;
> + if (phdr->p_flags & QCOM_MDT_RELOCATABLE)
> + relocate = true;
> +
> + if (phdr->p_paddr < min_addr)
> + min_addr = phdr->p_paddr;
> +
> + if (phdr->p_paddr + phdr->p_memsz > max_addr)
> + max_addr = ALIGN(phdr->p_paddr + phdr->p_memsz, SZ_4K);
> + }
> +
> + if (relocate) {
> + ret = qcom_scm_pas_mem_setup(pas_id, mem_phys, max_addr - min_addr);
> + if (ret) {
> + dev_err(dev, "unable to setup relocation\n");
> + goto out;
> + }
> +
> + /*
> + * The image is relocatable, so offset each segment based on
> + * the lowest segment address.
> + */
> + mem_reloc = min_addr;
> + } else {
> + /*
> + * Image is not relocatable, so offset each segment based on
> + * the allocated physical chunk of memory.
> + */
> + mem_reloc = mem_phys;
> + }
>
> - if (!phdr->p_memsz)
> + for (i = 0; i < ehdr->e_phnum; i++) {
> + phdr = &phdrs[i];
> +
> + if (!mdt_phdr_valid(phdr))
> continue;
>
> - ptr = rproc_da_to_va(rproc, phdr->p_paddr, phdr->p_memsz);
> - if (!ptr) {
> - dev_err(&rproc->dev, "segment outside memory range\n");
> + offset = phdr->p_paddr - mem_reloc;
Shouldn't 'offset' variable be of signed type i.e. ssize_t? Also p_paddr
is of type Elf32_Addr and mem_reloc is of type phys_addr_t which on
64bit systems is 64bit long, I think it should be better to make
mem_reloc of the same type as p_paddr.
> + if (offset < 0 || offset + phdr->p_memsz > mem_size) {
> + dev_err(dev, "segment outside memory range\n");
> ret = -EINVAL;
> break;
> }
>
> + ptr = mem_region + offset;
> +
> if (phdr->p_filesz) {
> sprintf(fw_name + fw_name_len - 3, "b%02d", i);
> - ret = request_firmware(&seg_fw, fw_name, &rproc->dev);
> + ret = request_firmware(&seg_fw, fw_name, dev);
> if (ret) {
> - dev_err(&rproc->dev, "failed to load %s\n",
> - fw_name);
> + dev_err(dev, "failed to load %s\n", fw_name);
> break;
> }
>
--
regards,
Stan
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